Question : Users connected to your computer

Sometimes when I go to shutdown my PC, I get a message that there are x users connected to my computer, do I want to disconnect them - (or something along those lines).

I am using Win95 on an NT4 network using MS Eschange 5, and I have no resources shared.  Boffins tell me this can't happen, but it does.  They tell me not to worry but I do. It also happens to other users ...

Can anyone tell me how this happens?  How can I stop it?

Answer : Users connected to your computer

Thanks.  Sorry it took me so long to get back to this - fighting other fires ... I have found that the connection each time I have intercepted on is actually the servers "polling" the PC's - the connection is the $IPC share on the servers.

I have tried downloading the program suggested - without luck so far, but I'll keep trying.