So I just redownloaded WoW, and the stupid patch won't let me get past the Pick A Realm screen. I can't click on anything once I get to that point. I had a problem with this patch last time, and was able to get into the game to fix it. What do I do now?
Check the Tech Support forum at Blizzard's site. There is a problem with certain video chipsets with the patch and some solutions are listed there. From what I've read over there, the problem you're having is one of them.