At this point in time I will NOT even consider buying anything Maxis. In the last three days I have uninstalled and reinstalled my game 3 times. Why?; You may ask...wel, I had no problems to start with and all of a sudden my game is crashing, pretty well every session, then I get messages saying that I'm low on virtual memory and so on. So I wiped EVERYTHING, that had to do with the Sims2 and thought I would be okay from now on. NUP..Played for about two hours today, first time since reinstalling, had a home business and the same shit is popping up again. So no more EP's for me till I find out WTF is going on as it is..
If it complains that you don't have enough virtual memory then... then you need more virtual memory.
Start > Settings > Control panel > System
Advanced > Performance > Settings
Advanced > Virtual memory > Change
You should be able to change the amount of VM for your OS to use, just add few gigs and it should work.