I have 2 arcade cabinets and I already restored one and used it to display a game I've created in Flash:

I thought I'll use my old PSOne for the other cabinet.

1. Can I use a Hard drive instead of CD's? It would be a drag changing CD's all the time since the system would be concealed.
2. All my game CD's are severely scratched. Where can I get copies for my games (you may PM me if posting here is not cool)?
3. can I run an Emulator wich would let me play oldschool arcade games (Pacman, Street Fighter, Etc.)?
Thanks a lot,
Maor.