SBS 4.5 reinstall

On our NT server the C drive was running low on free space, so someone took it upon themselves to move the Small Business folder to another drive. They used Norton Uninstall. I went ahead and tried to reinstall it by using Norton to move it back to where it origionally was. That didn't help. The SBS console is not useable. All the parts are there, but not working. I tried to do a reinstall, but that's not working either.

Any ideas would be great before I invest alot of time to rebuild my server.