I can map a folder on sharepoint from a Windows Vista machine with the following command line
NET USE z: "http://srv-nam/sites/folder-1/folder-2"
...and it works just fine.
If I then logon with exactly the same user to a Windows XP box and type exactly the same command I get
Failed with system error 67; Network name cannot be found
Does anyone have any ideas how I get the Windows XP box working please?