how to delete the listener service

hi,
I have some listener service enteries (win 2000). These listeners does not exist; but somehow these services are still there. How can i delete this
I tried by saying oradim
But it says, a valid service name is appended with sid.

I dont know what was the sid the listener was related to.

How can i clean these entries

I had to do it by deleting the registry entries under: HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services. CAREFULLY!