Just bought an external HDD and plugged into my notebook (XP Media Centre) which is connected (wireless) to my home network. My desktop PC (Vista Ultimate) is also connected to the same Linksys router. We have no problem in Internet, printer and file sharing between the notebook and desktop.

When I share this newly connected external HDD - F: , it looks fine initially, I can 'see' this newly connected F: from my desktop PC, but I can't access the file in this drive with the following error:

"The drive is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permission"

Where and how can I set the access permission for this drive?