I'm kind of stuck with this one and have been trying random things trying to get my computer working.
Long story short: I had to install OSX10.3 on a new hard drive, got it installed switched the monitor resolution to something too high by accident, and it's stuck there and both mine and my roommate's monitors won't display it. I've zapped the pram several times, reset the nvram in open firmware, I can start up in safe boot and have reset the monitor resolution there (which stays now, but doesn't carry over to non-safe mode). I'm really at a loss of what to do beyond this. Any suggestions?