iRacing = crack in a box

Ok.
So what am I going to need to bring to the dance to get the most out
of this sim?

I dropped out of the Beta a loooong time ago from cancer, and while
things are much better (still alive, obviously) I really haven't kept
my computer up to bleeding edge.
I have a p4 3Gig Extreme with 2 gigs of Ram, and I will be getting a
new video card (maybe) if these bare bones will work. If not, then I
am going to wait and build a new system.

I really feel this is the type of game/sim I want now. Not just
because it is very local for me with Legends, Modifieds, and Late
Models. But as someone who beta tested and played Motor City Online, I
have always wanted a "serious" type of racing MMO, and this looks to
be it.

btgoss