Aha, a Mac problem. At last a techie probelm I can try and help with.Havent worked with OS9 for ages. New keyboard might surely work, I'm not sure where you can get old installation discs from. There's plenty of Mac dedicated forums that may help. i normally use this one for Mac tips, and Im pretty sure there's a troubleshooting section on it. Have a shot anyway.
http://www.macfixitforums.com/
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