I know you can run SL on pre Vista Toshiba machines. Two of my friends play it, and they both have the same toshiba machines. Although since I got mine, I've been having the same problems, and it's the Vista installed. One of the first total Vista machine Toshiba put out, so down grading to XP was out of the question. Though I'm now try the new drivers that were released and see how that works.

Trident Xp4m32 Driver For Mac

Just what I need, a portable SL addiction machine. Thinking it may not be the best thing to do.