There's DVD free patches you can get that just run the game from the files on your computer. Perfectly legal, but obviously not supported because of the potential for piracy. I don't wanna recommend any that I don't use incase you get any more problems, however, I can tell you that the SMoKE patch kinda works this way. It wont work unless you already have PES installed, which you do, then once you install the patch you don't need the DVD any more. It's very handy as it means you don't have to panic every time you take the disc out!
Alternatively, you could buy an external disc drive if it's going to be a long term issue.