Have you tried disabling the Windows XP firewall on both computers or at least, allowing the "File and Printer Sharing" Exception in the firewall? When I set up a network I disable ALL firewalls until I know that the connections are correct. After that, I enable the firewall and if there are problems, I know where to start. You should only be running ONE firewall on each machine and in fact, if the router has a firewall, you might consider running without it, IF you can't configure it to run correctly.
Here's how to allow the "Exception" on SP2. Open the Control Panel, then double click on the "Windows Firewall" icon. When that loads, click on the "Exception" tab, then place a check mark in the "File and Printer Sharing" icon which should be in that screen. If it's not there, then "Add" it.
HOpe this helps.
I've been trying (unsucessfully) for the last month or so, to network my PC and Laptop. Both are Dells running Windows XP Home w/SP #2.
My DSL goes from the router to a LINKSYS wireless router; from the Linksys Wireless router, to the Dell PC (via an ethernet cable).
On my laptop (which access the newtork via a Linksys wireless PCMIA card), i can access the DSL service but not any files (or printers) on the PC.
I once was able to access the files(and printers) but such access is sporadic. I'll have access to the PC files (and printers) from my laptop for a minute, and then suddenly loose it.
Right now i'm using Window's home networking wizard to set up the network, but somehting tell's me that i need to purchase a better software package.
Another issue (i think) might be the souped-up firewall software that came with the recent Windows upgrade...but i really have no idea.
Any help with regards to this would be most appreciated.