How do I find top CPU consumers on a windows machine running Oracle 9i (9.2.0.4 Enterprise Edition)?

HP Unix is simple - use a top command.  

Solaris is not as friendly - but you can use prstat.  

When I use task manager in Windows XP, I can only see CPU being consumed by the Oracle.exe process. I can then perform a "tlist" on the process number to find out which instance of Oracle is consuming the cpu.  

I tried a utility called procexp.exe, but it doesn't tie back to any sessions in the database.  

Does anyone have a utility to find the top CPU consumers on a windows machine?  

I am desperate and just about ready to stop both production instances since I can not find the offenders and a 4-way, dual core machine has been running 100% cpu for a while...  

Thanks!  

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