Tried what you said:

1. downloaded script and inserted into the folder http://www.modracer.com/cgi-bin/rebuildmems.cgi

2. Opened http://www.modracer.com/cgi-bin/rebuildmems.cgi in a browser and it gave me this message:

STOP! Please close your UBB first in the control panel.

I'm sorry but I'm lost...