Can't connect to XP on Vbox

[Jim Byrnes]

Running Ubuntu 10.04. I used to be able to connect to XP running in VBox 
but now I can't. I get an error message saying: Unable to mount location 
- failed to retrieve share list from server.

Looking at all the other entries in nautilius-->network I see that they 
are of the type Folder(inode/directory).  The type of my Vbox connection 
is unknown.

How can I get rid of the Vbox entry so I can try to setup a proper 
connection?

Thanks,  Jim