tomcat not running...

[gildlrei]

Hello guys,
I don't know what's happening with my tomcat installation, it was ok... but suddenly 
stopped. I'm running on win2k + IIS redirect mode. When type "tomcat start" on prompt 
C:\>, i receive the usual messages in a new "DOS" window and after it close 
automatically and tomcat process hang-up. My tomcat.log file doesn't register any 
error message.
Any suggestions are wellcome!
thanks in advance!