Hi, Just starting out here with Parallels for Mac. I have an iMac Intel Core Duo, with the almost bare minimum of 512 MB memory. I haven't needed much more, since I'm rarely using high-octane, or multiple, applications at the same time. But now as i try to start up my first guest OS (Windows)in Parallels, I would like to know how much RAM-space I need to give to it. Anyone know like the minimum needed, as a starting point for me? Plus, the hard drive space dedicated to the Guest OS, in my VM, seems pretty darn small. Is it of the expanding variety? Thanks in advance.