Buy Rainbow Six now, during the sale, when its $6.99? I bought all of the Tom Clancy games on Steam during the sale (excet Endwar, which I hear is bad) and my biggest fear with buying Rainbow Six via Gog.com is that it doens't include the expansion...and that at some point Ubisoft puts Rainbow Six with the expansion up on Steam for the same price or cheaper. Should I buy it now or be cautious and wait to see if Gog adds the expansion and has another sale on it (maybe even a better sale on it like 50%)?

I'd recommend caution, mostly because Rainbow Six is the hardest FPS game I've ever played, and that's saying a lot. Refer to the reviews to see why paying full price for a game that might not be all you want is unwise.

Installing rainbow six and eagle watch (white house level) and then the patch if needed off of the CDs. For some reason it works without a CD needing to be in the drive also, under Win. 7 32 bit