Sharing hard drive

> I am trying to share a hard drive from one computer on my
> home network to the next. I go to "My Computer" and
> Tools and "Map Network Drive". I select the name of the
> drive as
>
> \\target computer name\C4
> and log on as differnet user
>
> target computer name\my log in name on that computer
> my password on the target computer
>
> the system tries and comes back claiming that
>
> "The network folder specified is currently mapped using a
> different user name and password.
> To connect using a different user name and passwordfirst
> disconnect any existing mappings to this network share."
>
> I have only two drives mapped and neither of them is the
> one I am trying to connect to. I pulled down the logical
> drive letter list and none of the letters are assigned to
> the drive I am trying to connect to. I am connecting to
> another drive on the same machine successfully.
>
> Anyone have a clue as to what to do to get the share to
> connect?
>
> Thanks
>
> Larry