This is my realm list configuration tool.
I know there are a couple realm list tools out there, but I would have to say use mine because it's simple, and easy for those who don't really know what they're doing (IE: directory, realmlist, etc).
Basically, I coded it myself in Vb6. It reads from your registry to see what your WoW directory is so you don't have to manually edit it.
If you did not install WoW, it won't auto-load the directory.
Once you click Change List, it should pop up a save dialog. It will NOT display an overwrite check once you click save.
Here is a screen shot:

So here's the summary:- It reads your directory from your registry, making startup easy.
- 3 Click change: Click US/EU > Change List > Save > Done.
- Super simple interface.
Virus Total Analysis:
Virustotal. MD5: 9a0c83ddc5797eeecc26652af7815be8 Mal/GamePSW-B
NOTE: The only reason I could think one of them thinks it's Mal/GamePSW-B is because it reads from the registry.
DOWNLOAD & Mirrors:
Code:
http://rapidshare.com/files/93359706/EZ_Realm_Configuration.zip
http://files.filefront.com/EZ+Realm+Configurationzip/;9668720;/fileinfo.html
http://frozengaming.com/f/EZ_Realm_Configuration.zip
Enjoy.