Good question Kidace. I haven't made any DVD copies on account that it's cheaper to buy DVD games than to invest in the burner!

That said, Sgt Dan's site has an explanation of how to boot DVD copies but without going into the DVD copying process. If you've got a DVD burner, try any "respectable" software like Nero or what came with the burner and boot using the advice on Sgt Dan's site. I don't have a NeoKey so can't predict whether it'll fall short of what a modchip will do. Sgt Dan's site has a forum on which you can also put the question.