yeah I was under the understanding that windows 7 was supposed to support the largest array of cpu and memory configurations, being one of the 'most optimized' versions of windows yet.  I read that 6+ months ago somewhere and find it hard to believe...but maybe Bill's minions have done something good with this version.

As for how much ram it will support?  32bit should still be limited to the 3gb with the /3g switch for using more, but 64bit will support more than wee can afford!