One question, she is using VM Ware for 2 programs, but has very little green when she is on it. Can you install more memory, and recommend where to get it? We just got the 4Gb that came with the iMac, which is an i3. I do not know how high to go, or how quickly we will need it.

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Adding additional ram...Since you're not going to be running in 64 bit anytime soon, that means that no one program will be able to address more than 4 gigs by itself.  So you don't need to be in a big rush to max out the machine.  You may want to buy the max allowed in one slot (4 gigs I think) from crucial.com and then dedicated that much solely to VMware.  (available as a settings in the prefs of VMware)