virtualbox.org

Hi, i've read loads of tutorials and forum posts on this topic but still can't find out where i'm going wrong. I'm running Windows XP in VirtualBox 2.1.4 on Ubuntu Intrepid 8.10. I have installed Guest Additions and created my shared folder (with full access allowed) via the VBox GUI, I then click on Map Network Drives in XP, which shows my shared folder under Virtual Box Shared Folders -> \\VBOXSVR\home. So everything seems to be fine at this point, however, when I select the home folder and click on OK, I get the "Attempting to connect to \\VBOXSVR\home..." message followed by "The network path \\VBOXSVR\home could not be found". Similarly, if i try to connect via command line, using "net use z:\\vboxsvr\home" - I get "The network name cannot be found".

Grateful if anyone can help me sort this out as i can't see what the problem is.