I hate making multiple posts :-/ Can't seem to edit the previous one now.

Update:

It wouldn't start with the 500MHz board. Popped the 400MHz back in and not a single problem.

Now I'm getting issues when trying to move over the firmware update. The iMac can't use my jumpdrive for some reason, and when I move it via USB Floppy, I get Error -39. My eMac doesn't have a problem opening the file off of the Floppy though. I'm thinking if I network the eMac and iMac via ethernet I can directly access the file on the iMac.