I don't know why, I'm just seeing what it can do.
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I couldn't PM Matt so here's my response:
I'm just playing but it does 'gall me' that I now can run a 32-bit XP and access all of the RAM.
I'm not an IT guy (though I do hack away) and I'll probably continue with W7 (64-bit) and an occasional linux.
http://www.msfn.org/win2k3/
Thanks for the input.