After I finished installing Windows XP SP2 on my Macbook Pro, I fed it the installation DVD that's supposed to have all the drivers and stuff on it. It appeared to install fine, but then I noticed things weren't working that should have: trackpad doesn't respond to single-tap clicking, I can't control volume using F10-F12, and I just noticed that the speakers in the computer actually can't play sound. I suspect other things don't work too, I just haven't tried everything yet. I tried putting the installation DVD back in to see if it would give me a way to fix this, but now the Windows part of my computer refuses to acknowledge that it's in there. (I can see the disk when I log onto the Macintosh part of the computer.) (Somewhere along the line, I downloaded SP3, if that's relevant, but I had all these problems before I did that and just ignored it until I realized I had no sound, so I don't think it is...) Please help. I just wanna play LoL.