Need to make one computer act like 3 separate computers

[Iwaskilled]

I was wondering if this even exists, Here is my issue.

I'm looking for some software that will make one computer with three monitor outputs and a bunch of usb ports, into three workstations. I just need it to run a simple testing software and mabe internet explorer. The only programs that will be running are for people to take practice tests, so the software is not demanding at all. The reason I'm not too enthusiastic about building 3 pc's is the cost VS. recovery. These workstations won't be under any load at all so system resources aren't an issue. The most important thing is that each workstation can't interfere with the other workstations.

If anybody has any suggestions please feel free to reply or email me!

Thanks for your Help!

 

[office politics]

migh wanna look into mainframe comps. last time i was told, the mainframe could be your server and the clients could be dumb terminals (only KVM to interact with the server). i never setup anything like this before tho