diff --git a/EduNetworkBuilder/IPAddressEntry.cs b/EduNetworkBuilder/IPAddressEntry.cs
index b2ded60..7d8aae6 100644
--- a/EduNetworkBuilder/IPAddressEntry.cs
+++ b/EduNetworkBuilder/IPAddressEntry.cs
@@ -22,6 +22,7 @@ namespace EduNetworkBuilder
         Point StartLocation = new Point (50,50);
 
         NB_IPAddress SavedIPAddress = null;
+        ToolTip myTooltip = new ToolTip();
 
 
         public IPAddressEntry(NB_IPAddress toEdit, NetworkDevice ToEdit, Form ParentForm, bool JustPinging=false)
@@ -271,5 +272,27 @@ namespace EduNetworkBuilder
             if (tLocation.X < 0 || tLocation.Y < 0) tLocation = new Point(50, 50);
             Location = tLocation;
         }
+
+        public void ShowAsSubnetGateway()
+        {
+            lblIP.Text = NB.Translate("IPE_Network");
+            Text = NB.Translate("NB_Subnet");
+
+            myTooltip.AutoPopDelay = 5000;
+            myTooltip.InitialDelay = 1000;
+            myTooltip.ReshowDelay = 500;
+            // Force the ToolTip text to be displayed whether or not the form is active.
+            myTooltip.ShowAlways = true;
+
+            myTooltip.SetToolTip(tbIPAddress, NB.Translate("IPE_NetworkTooltip"));
+            myTooltip.SetToolTip(tbGateway, NB.Translate("IPE_GatewayTooltip"));
+            myTooltip.SetToolTip(tbNetmask, NB.Translate("IPE_NetmaskTooltip"));
+
+            myTooltip.SetToolTip(lblIP, NB.Translate("IPE_NetworkTooltip"));
+            myTooltip.SetToolTip(lblGateway, NB.Translate("IPE_GatewayTooltip"));
+            myTooltip.SetToolTip(lblNetmask, NB.Translate("IPE_NetmaskTooltip"));
+
+            ShowDialog();
+        }
     }
 }