Yep, I am. I have a Core 2 Duo Dell laptop, with 4 gig ram, and an (unsupported) Intel 4 graphics chip. Apart from mouse lag - which it seems is a very common problem - I am not experiencing any issues at all, and am able to play the game without difficulty.
I must add though, that I have also applied the various tweaks I have read about in this forum, and am playing on 'low' video settings.