Clear saved network password in windows 2000 professional

I want to clear the network username and password saved to connect to a computer in a workgroup, so I can login to that other computer with a different username and password. In windows 2000 professional.

I have found this googling: “rundll32.exe keymgr.dll, KRShowKeyMgr”. But it says “Error loading keymgr.dll The specified module could not be found” So my conclusion is that this only works with winxp.

Thanks