Mike
VP7 requires a G5, and probably 512 MB RAM, as an asbolute minimum
I run VP6 on a 1 GHz PowerBook with 768 MB RAM, and it's tolerable, but everything drags a bit.
I hear that VP7 is an even bigger resource hog than VP6, and Microsoft recommends NOT running XP SP2 on it, because all the security "enhancements" make it run even sower.
Tom Waltz