Look for ePSXe, which lets you play PSX games off of the disc.
Unfortunatley you need to find the BIOS to use the emulator. You're on your own for that. Since ePSXe doesnt normally come with the BIOS, I'm not in trouble.
On the other hand, Project 64 is your best bet for Nintendo 64 gaming. No BIOS required to use it, and it also comes with plug-ins which makes it much easier to set up than ePSXe (Which is probably the best of its kind)
So, yeah. Project 64 and ePSXe. I'd link them, but that would take the effort out of your hands.
Kudos to GAF members who think talk of emulation or emulators is a no-no.
Next time though, you ought to look in places that are more willing to help you with the situation. Google is a good start.