I have two computers connected to a cable modem through a Linksys Cable/DSL Router with 4-Port Switch. I can surf the internet just fine from both computers, but I can't do any file sharing between them. They are both Windows XP Professional SP2 with different computer names and the same workgroup name. When I go under My Nework Places and click on View Workgroup Computers, a dialog box pops up saying, "<Workgroup Name> 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 permissions. The list of servers for this workgroup is not currently available." It's just a simple home network that I'm trying to build and I have my user accounts on both computers are administrators. How can I be able to share files?