Okay, but please run and link a new dxdiag, so I can see the current state of your drivers and other info. Please also let me know whether Sims 3 runs well without crashing when you're testing in a clean folder. I'm not saying you need to play that way normally, but it's useful information to have.
By the way, I happened to open this thread today just by coincidence, but if I hadn't, I wouldn't have noticed you edited your reply to ask for help. If I don't respond to a similar edit in the future, please post again and tag me so I see it.
