VNC + VIRTUAL DESKTOP + JAVA ACCESS = WIN?

Ok, heres what I want to do:
I want users to be able to connect to my website and through some sort of client, use a sort of VNC on a "virtual computer" that doesnt actually exist. I'm pretty sure they can do this at Flinders University, so I know its not impossible.

If anyone can tell me how to do this, I shall reward thou with CP.

>>12
Don't help him.  He failed to deliver the first time and he's sure to do it again.