Heres another program I made in vb.net last night. This one is a simple realmlist editor.
Note you need the latest framework.
To add a realm enter it in the textbox and click add. After that make sure its selected in the drop down box, finally click WoW and it changes your realmlist, deletes your cache, and launches the game.
Download me plox
http://img227.imageshack.us/img227/4093/picld9.jpg is teh pic.
Edit: I need this moved please.