Will Sims 3 Work on Windows Vista Hp and When Does It Come out on Wii?

Ive been reading the reviews for sims 3 on walmart.com and one person said that they had windows vista and it was lagging whatever that means. Can someone please tell me if it will work right? And does anyone know when the sims 3 is coming out on Wii??

Suggestion:

I have the Sims 3 on my Windows 7 hp computer (Vista) and my computer is horrible i really hate it but the sims does work well on it