Chip Pearson has some notes to help diagnose startup problems at:
http://www.cpearson.com/excel/StartupErrors.htm

You may want to share a more descriptive explanation of what happens to get a
better answer.

What goes wrong and when?
Have you reinstalled xl2002?
Maybe just reregistering excel will help

windows start button
excel /unregserver
then
excel /regserver

(should reset the windows registry back to factory defaults)