WoW-Mania

Just a quick one.

Will downloading and setting this up effect my normal WoW stuff ?

What do you mean normal wow stuff?
If you download on a separate folder you should have no problem.
The issue is retail stopping us from running...

WoW-Mania v Retail
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Here is a quick step-by-step solution:

1. Rename retail wow folder
2. Rename Blizzard Launcher to DO_NOT_USE._exe
3. Restart machine (yes the PC)
4. Fix wow-mania's realmlist.wtf file (make sure it is set to wotlk.wow-mania.com)
5. Start our Launcher
6. Play

The user can still play the retail but should not start their launcher.
If the user uses Blizzard's launcher everything gets fucked up again.

Hope this helps.