diff --git a/EduNetworkBuilder/LinkEditor.Designer.cs b/EduNetworkBuilder/LinkEditor.Designer.cs
index 94c4aef..a5529fb 100644
--- a/EduNetworkBuilder/LinkEditor.Designer.cs
+++ b/EduNetworkBuilder/LinkEditor.Designer.cs
@@ -37,6 +37,7 @@
             this.cbLinkType = new System.Windows.Forms.ComboBox();
             this.pbSource = new System.Windows.Forms.PictureBox();
             this.pbDest = new System.Windows.Forms.PictureBox();
+            this.lblInstructions = new System.Windows.Forms.Label();
             ((System.ComponentModel.ISupportInitialize)(this.pbSource)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.pbDest)).BeginInit();
             this.SuspendLayout();
@@ -46,7 +47,7 @@
             this.lbSrcHost.FormattingEnabled = true;
             this.lbSrcHost.ItemHeight = 29;
             this.lbSrcHost.Location = new System.Drawing.Point(20, 185);
-            this.lbSrcHost.Margin = new System.Windows.Forms.Padding(5, 5, 5, 5);
+            this.lbSrcHost.Margin = new System.Windows.Forms.Padding(5);
             this.lbSrcHost.Name = "lbSrcHost";
             this.lbSrcHost.Size = new System.Drawing.Size(177, 149);
             this.lbSrcHost.TabIndex = 0;
@@ -57,7 +58,7 @@
             this.lbSrcNic.FormattingEnabled = true;
             this.lbSrcNic.ItemHeight = 29;
             this.lbSrcNic.Location = new System.Drawing.Point(210, 185);
-            this.lbSrcNic.Margin = new System.Windows.Forms.Padding(5, 5, 5, 5);
+            this.lbSrcNic.Margin = new System.Windows.Forms.Padding(5);
             this.lbSrcNic.Name = "lbSrcNic";
             this.lbSrcNic.Size = new System.Drawing.Size(153, 149);
             this.lbSrcNic.TabIndex = 1;
@@ -68,7 +69,7 @@
             this.lbDstNic.FormattingEnabled = true;
             this.lbDstNic.ItemHeight = 29;
             this.lbDstNic.Location = new System.Drawing.Point(702, 185);
-            this.lbDstNic.Margin = new System.Windows.Forms.Padding(5, 5, 5, 5);
+            this.lbDstNic.Margin = new System.Windows.Forms.Padding(5);
             this.lbDstNic.Name = "lbDstNic";
             this.lbDstNic.Size = new System.Drawing.Size(153, 149);
             this.lbDstNic.TabIndex = 3;
@@ -79,7 +80,7 @@
             this.lbDstHost.FormattingEnabled = true;
             this.lbDstHost.ItemHeight = 29;
             this.lbDstHost.Location = new System.Drawing.Point(512, 185);
-            this.lbDstHost.Margin = new System.Windows.Forms.Padding(5, 5, 5, 5);
+            this.lbDstHost.Margin = new System.Windows.Forms.Padding(5);
             this.lbDstHost.Name = "lbDstHost";
             this.lbDstHost.Size = new System.Drawing.Size(177, 149);
             this.lbDstHost.TabIndex = 2;
@@ -88,7 +89,7 @@
             // btnLink
             // 
             this.btnLink.Location = new System.Drawing.Point(372, 185);
-            this.btnLink.Margin = new System.Windows.Forms.Padding(5, 5, 5, 5);
+            this.btnLink.Margin = new System.Windows.Forms.Padding(5);
             this.btnLink.Name = "btnLink";
             this.btnLink.Size = new System.Drawing.Size(131, 42);
             this.btnLink.TabIndex = 4;
@@ -99,7 +100,7 @@
             // btnCancel
             // 
             this.btnCancel.Location = new System.Drawing.Point(372, 237);
-            this.btnCancel.Margin = new System.Windows.Forms.Padding(5, 5, 5, 5);
+            this.btnCancel.Margin = new System.Windows.Forms.Padding(5);
             this.btnCancel.Name = "btnCancel";
             this.btnCancel.Size = new System.Drawing.Size(131, 42);
             this.btnCancel.TabIndex = 5;
@@ -111,7 +112,7 @@
             // 
             this.cbLinkType.FormattingEnabled = true;
             this.cbLinkType.Location = new System.Drawing.Point(372, 290);
-            this.cbLinkType.Margin = new System.Windows.Forms.Padding(5, 5, 5, 5);
+            this.cbLinkType.Margin = new System.Windows.Forms.Padding(5);
             this.cbLinkType.Name = "cbLinkType";
             this.cbLinkType.Size = new System.Drawing.Size(128, 37);
             this.cbLinkType.TabIndex = 6;
@@ -134,11 +135,21 @@
             this.pbDest.TabIndex = 8;
             this.pbDest.TabStop = false;
             // 
+            // lblInstructions
+            // 
+            this.lblInstructions.AutoSize = true;
+            this.lblInstructions.Location = new System.Drawing.Point(15, 351);
+            this.lblInstructions.Name = "lblInstructions";
+            this.lblInstructions.Size = new System.Drawing.Size(79, 29);
+            this.lblInstructions.TabIndex = 9;
+            this.lblInstructions.Text = "label1";
+            // 
             // LinkEditor
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(14F, 29F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(866, 389);
+            this.Controls.Add(this.lblInstructions);
             this.Controls.Add(this.pbDest);
             this.Controls.Add(this.pbSource);
             this.Controls.Add(this.cbLinkType);
@@ -150,13 +161,14 @@
             this.Controls.Add(this.lbSrcHost);
             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
             this.Icon = global::EduNetworkBuilder.Properties.Resources.NBIco;
-            this.Margin = new System.Windows.Forms.Padding(5, 5, 5, 5);
+            this.Margin = new System.Windows.Forms.Padding(5);
             this.Name = "LinkEditor";
             this.Text = "LinkEditor";
             this.Shown += new System.EventHandler(this.LinkEditor_Shown);
             ((System.ComponentModel.ISupportInitialize)(this.pbSource)).EndInit();
             ((System.ComponentModel.ISupportInitialize)(this.pbDest)).EndInit();
             this.ResumeLayout(false);
+            this.PerformLayout();
 
         }
 
@@ -171,5 +183,6 @@
         private System.Windows.Forms.ComboBox cbLinkType;
         private System.Windows.Forms.PictureBox pbSource;
         private System.Windows.Forms.PictureBox pbDest;
+        private System.Windows.Forms.Label lblInstructions;
     }
 }
\ No newline at end of file
diff --git a/EduNetworkBuilder/LinkEditor.cs b/EduNetworkBuilder/LinkEditor.cs
index 360df05..7e68217 100644
--- a/EduNetworkBuilder/LinkEditor.cs
+++ b/EduNetworkBuilder/LinkEditor.cs
@@ -232,6 +232,43 @@ namespace EduNetworkBuilder
                 cbLinkType.SelectedItem = theLinkType;
             else
                 cbLinkType.SelectedIndex = 0;
+
+            //Update the instructions.
+            lblInstructions.Text = ""; //empty them out if we do not need instructions
+            lbSrcHost.ResetForeColor() ;
+            lbSrcNic.ResetForeColor();
+            lbDstHost.ResetForeColor();
+            lbDstNic.ResetForeColor();
+            btnLink.ForeColor = Color.Black;
+            if (lbSrcHost.SelectedItem == null)
+            {
+                lblInstructions.Text = "Choose the source device.";
+                lbSrcHost.ForeColor = Color.Red;
+            } 
+            else if (lbSrcNic.SelectedItem == null)
+            {
+                lblInstructions.Text = "Choose the NIC / Port on the source device.";
+                lbSrcNic.ForeColor = Color.Red;
+            }
+            else if (lbDstHost.SelectedItem == null)
+            {
+                lblInstructions.Text = "Choose the destination device.";
+                lbDstHost.ForeColor = Color.Red;
+            }
+            else if (lbDstNic.SelectedItem == null)
+            {
+                lblInstructions.Text = "Choose the NIC / Port on the destination device.";
+                lbDstNic.ForeColor = Color.Red;
+            }
+            else
+            {
+                //We have a valid link.  We are ready to press the link.
+                lblInstructions.Text = "This is a valid link.  Press LINK to continue";
+                btnLink.ForeColor = Color.Red;
+            }
+
+
+
             processing = false;
         }