Johnny,
several items:
1) These forums are users helping other users
2) I, personally, would not post case #'s or any other personal information in these forums
3) I am unclear what kind of hardware you are running
your information shows:
APPLE POWERBOOK G3, Mac OS 9.0.x, 2000 G3 Mac Powerbook
Categories: Using a MacBook Pro
Can you post the model of the computer and the version of the OS you are trying to install? I have not idea what MacKeeper has to do with this. You should install the OS X DVD, select the start up disk (from system preferences) as the DVD, then reboot the computer. Once the computer has booted to the DVD perform a clean install of the hard drive (which will erase and format the drive).
If you need more help refer to this:
https://discussions.apple.com/docs/DOC-3393
Post back with specific details and questions
Regards,
Wayne