Windows Service Debug Trace Messages

HI

I wrote a classlibray udp server that hosted it in windows form and it works great. When I debug the trace and debug messages that are output. When I place cl on windows service, none of the debug messages are displayed. The cl and windows service is in debug state, so there are no tracelisteniners pointers, so it must use outputstring. I even add messagebox.show to cl to make sure the function is called on the windows service and it does.

So how can I get the trace / debgug message. The service operates as a local system.

What am I missing