How to play WoW on two servers at once

Do you want to play on 2 private WoW servers at once. Here is a short guide how to do this

1. Go to your realmlist.wtf file and make sure you have both of the realmlist's you want.
2. Put a '#' in front of one of the set realmlist's and nothing in front of the other one.
3. Open Wow.exe and then login.
4. Go back to your realmlist.wtf folder and delete the '#' in front of the other realmlist you had set, and put a '#' on the other one.
5. Open Wow.exe again and there, your playing on both!