Added Computer Not Connnecting to Home Network

I got a Dell D620 laptop that I've added to a home network.  The network consists of a Dell 8200 and a Dell 2350 (brand boredom, for sure :-).   The 8200 and the 2350 share files and printers just fine.   I've gotten the D620 hooked up to the physical network, so it can access the internet

8200 <--> Linksys BEFSR41 <--> Linksys WRT54GS <--> 2350                    (workgroup name "HomeNetwork")
                        /\                                        /\          
                        V                                         V
                 DSL Modem                               D620


That works fine.

I used the XP Pro Home Network Setup Wizard on the D620, and it automagically came up with the name "HomeNetwork", so I thought it had found the other computers.   After the restart, though,
I went to MS Network, found "HomeNetwork", doubleclicked, and it said, it said "HomeNetwork is not accessible, you may not have permission to use this resource..."

I went to the 8200 and initially I could see the D620 in the HomeNetwork list, but it gave a similar message when I clicked on it.   After a restart on both the 8200 and the D620, I can still see the D620 from the 8200, but I get the same error message (//D620 is not accessible) and the D620 is behaving the same way...sees HomeNetwork but gives the same error.

The 8200 and 2350 are still talking to each other fine.

I'm not sure what to do next to get the D620 working in HomeNetwork.

Any guidance on this would be appreciated.

Thanks!