Using WSAD 5.1.2 on W2K

I received this with the reason:

Launching the server failed:
Server port 9080 is in use.
....
....
etc
netstat -an didn't show anything on that port
I also tried, 9081, 9085, etc. with the same problem.

Any ideas, or logs to look at?
I'm not running IIS or FP.

Thanks,
Randy