Can't map folder

Using XP Pro. I've got a folder in my root directory that I'd like to map as
drive P:. Can't seem to make it happen. In Explorer, I click on Tools, Map
Network Drive. In the dialog box, there's an example of how to enter the
computer & dir name, so I follow that pattern and enter \\Doug-Desktop\Para
(all of which is correct). Windows searches for the network drive and says
it cannot be found. If I use the browse button and point to C:\PARA, the OK
button in that dialog is greyed out. What's going on?

By the way, this is a standalone machine, no connections to any network.


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