Can not access workgroup

[TBOB]

I have a small network. 1 pc with XP Pro and 2 with XP Home. They are connected using a WRT54G. 2 are wireless, 1 is wired. They are all set to use the Router's DHCP server. They all get an IP in the same domain. They are all in the same workgroup with unique names. They all get to the Internet. I can ping the router from all computers, but can not ping one computer from another computer. I can see the workgroup under My Network Places but when I click on the workgroup from any of the computers I get the following message: "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." I suppose the thing that bothers me is when I set this up 2 weeks ago, I could see the other computers, see and use the shared folders, and share the printers. What could change to make none of the resources see each other all at the same time?

Thanks for the help,
Tony

 

[JOAMON]

Nasty little thing called Microsoft automatic updates. It has been known to automatically enable the PC personal firewall on SP2 machines even if you have it turned off. Check the firewall settings.

 

[bcastner]

http://support.microsoft.com/kb/318...port/kb/articles/q313/3/48.asp&NoWebContent=1