If you can't get 10.6.8 to work, you can always stick with 10.6.6. Like 95 percent of things that work on 10.6.8 work on 10.6.6 from what I noticed. Unless you want to be a gamer because for some reason some games require 10.6.8. Most software will work with 10.6.6. I could never get 10.6.8 to work.