Is it possible to move a ps2 game file that was created on a playstation3 onto a ps2 system?

May be...

Yes you need to buy a memory card to usb adaptor..

All you need to do is plug it in to the usb port in the ps3 plug the mem card into it, then transfer the save from the virtual card...easy peesy



http://www.amazon.co.uk/Logic3-PS2-Memor...

i thnk you can transfer it over the computer. try looking up a tutorial on youtube or something...