Good info from all.
ADDRAM: We're looking at approximately 800 PC's at multiple locations. Some new machines, but some old. So kinda mixed.
Nuetron16: I haven't looked at that tool, but I will now. If I download it to my PC, will it scan just my pc or does it have the capability to scan all PC's in my environment?
DeaconFrost: I agree with your assessment of Windows Advisor. I ran it on mine and it did give misleading info, specifically printer info like you mentioned. But I thought it was worth a shot.
Basically, my budget is small. I'm trying to see which of my machines I would need to replace. Some of my machines can handle the upgrade right now, that I'm sure of. I haven't even been given the go ahead to do this, just in the exploratory stage right now.