Originally Posted by System32
thanks for the help
. SO if I would like the full features of Compiz then would I have to install it on my computer and not on a virtual PC?
That's (partially) correct.
You may be able to find a LiveCD for some distributions which includes compiz, which means you would boot off the CD/DVD, and it would run the operating system, but it wouldn't install anything to you hard drive. I'm not sure if many exist, though. The only one I can think might do this is Sabayon Linux.
Another alternative is to try to use the Wubi install for Ubuntu, which allows you to install Ubuntu (and use all your hardware to its fullest potential) without partitioning your hard drive, or installing a new boot loader. It's actually quite an elegant system.