multi OS dual screen - copy paste
 

I'm looking for a piece of software which allows me to use a windows linux dual screen.
So left windows, right linux and moving mouse between screens should work, and I want to be able to copy paste between both OS's.

I've heard it exists, but I can't seem to find the correct google search terms..

what i think you're trying to explain is probably VMWare, it's not quite the same to what you said, but it's the closest i can imagine.

VMWare can use dual screens (just drag the VWware screen to other monitor and maximize) and allows you to transfer clipboard data to/from host pc.

Or VirtualPC from Micro$osft....
VMware has some troubles installing Vista.