Yes.. it is possible to copy original playstation games using your PC, using a CDROM and CD-Writer
The only problem being that you'll need a "chipped" playstation to play these games. - Plus you need a lot of HD space to copy the CD-Image to, before re-buring to a blank CDR. - There are a few programs that enable you to copy playstation games..
try CDRWIN from www.goldenhawk.com