I don't have a windows computer , and rarely have access to a mac . Is there any way to set up a cloud-based virtual computer for free so I can run it on an ipad?
No.. there are no Xbox 360/PS3 Emulator and no there are no free online cloud service that lets you play pc games. Only service i could think of would be http://www.onlive.com/ but i have no idea whats going with them now days and streaming games is pretty useless unless you live close to server.. bad latency