Ew. You've got AtEase installed. That article isn't going to work.
Your next move should be to wipe out that hard drive and reinstall MacOS on it. It's a pain in the #### to remove AtEase-- Take it from someone who has attempted before. You should jump back on eBay and try to find media for that Mac, or maybe purchase some from here:
http://eshop.macsales.com/shop/software/
They sell OS 9.1, which would work pretty well on your system. If you've got enough RAM, you could run OS X, but I'd stick with OS 9.1, just to be safe.
alc6379
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How do you erase the hardrive if we don't have access to anything on the computer?
In most cases, it should be as simple as inserting the Mac OS installation disk into the drive and booting off it. Somewhere in the installer you'll be allowed to erase the disk.
John A
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