I have Version 4.3?

[Ldstormkill]

I have version 4.3 of wow --how do I down grade to play --also running windows vista ??

[naioro]

http://www.wowrage.nl/index.php/topic,1736.0.html
GL

[SoulHunt]

I have version 4.3 of wow --how do I down grade to play --also running windows vista ??

On windows Vista you can easily run wow. You don't even need the WRLauncher. Just change your realmlist.wtf, and then double click on wow.exe

To downgrade, read the post from Naioro