Ok, I got a problem with my mac. My only user does not have access to drive C (or the system drive). Now I know this because I was looking in permissions and did not realize I had clicked "no access". exiting the window caused everything to go from my desktop and now the computer wont load into the OS, it gets to a blue background and stops. It's as if finder wont load. I dont know what to do.
Imac G3 400mhz DVD; Mac OS X (10.3.9); 256ram, 40gb hdd

Imac G3 400mhz DVD; Mac OS X (10.3.9); 256ram, 40gb hdd