Problem with accessing another Comp on Network

Hi all

I have 2 desktops (let's call them DESK-A and DESK-B) and a recently purchased laptop (LAPT-C) in my house. Before I bought the laptop, I had a normal router and DESK-A and DESK-B were both connected to the router, and both could access each other's shared files. With the laptop, I also bought a wireless router and now DESK-A and DESK-B are connected to this new router, and my laptop is running wireless. DESK-B and C can connect to each other but neither computer can connect to DESK-A, and DESK-A cannot connect to DESK-B and C. Both DESK-B and LAPT-C can see DESK-A when I search for "a computer on the network" on B and C, but neither computer can be found through DESK-A. When I try to connect to DESK-A from DESK-B and LAPT-C, it doesn't work. The error it gives me is: "\\DESK-A 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 network path was not found."

HELP! What's wrong? It's pissing me off. I've been running Network Wizard several times, changing computer names, etc. etc. but nothing works. All computers are running Windows XP Pro, and file sharing is enabled and files are shared.

Thanks a bunch!

 

Do an "ipconfig /all" on each computer and make sure they are all on the same sbunet. All IP's and mask must be on the same network.

 

change the ip address in the wireless router