Tomcat as a service

[Winer, Matthew]

Yesterday afternoon I had Tomcat running as a service in Win2k.  I must have
changed something this morning because now it doesn't work as a service.
When I start it manually it work.  But as a service I get an Error 500 on
the web page.  I can't find what I changed that made this stop working.
Does anybody know where I could start. 

Thanks for you time

-Matt Winer