Bought an iMac 24" 2.4Ghz, 3GB RAM about 3 weeks ago, and I love the new machine. BUT . . . I have just a few Windows programs that I absolutely must continue to run on occasion, not frequently. I have a copy of Parallels, but have not yet loaded it. Question: If I load Parallels and Windows, does Parallels run all the time in the background . . . or only when it is deliberately launched by the user? I really don't want to load a program that must be running in the background at all time. I have read everything I can find about Parallels, and it appears to be the best solution for me, but I REALLY need this question answered. Very much appreciate any help you can provide.