More often than you might believe, this one bites people in the ****. The firewall is on by default, which is a good thing, but it's default configuration leaves a bit to be desired. It doesn't seem to allow systems on the same subnet to connect to one another, even though that's how it appears to be configured. Guess Microsoft decided to redefine what a subnet is.
Anyway, long technical detail laden story short... If your router has a firewall built into it, you don't need XP's firewall running (or any other for that matter). Just switch it off on both systems, and file and printer sharing will probably magically start working immediately.
I posted a similar question about a year ago and solved this. Since then I have had to reset my computer to day 1 and have forgot how I got it to work.
I am trying to network two computers so I can share the files and printers. There are two computers.
The stand up computer upstairs is connected via a cable (is it called an Ethernet cable) to my linksys router. It is running XP
The laptop uses a card to connect wirelessly to the linksys and is also using XP.
I have tried to do this via the network set up wizard but it looks for disc drive A: and that drive has stopped working on the stand-up up stairs. I do have a USB floppy disk drive, so if I could get the wizard to look elsewhere that option might work.
I also tried to get the option to work where I inputted some details manually on one computer, printed them out and then inputted them on the stand up, but that too didn't work.
Finally I looked at the option of doing something via USB where all you have to do is plug the USB drive into each computer on your network, but one of those steps seemed to involve sticking it in the router, and my router doesn't have a USB port.
Somehow I did get the networking to work last year and I remember it was a very simple solution, unfortunately I don't remember what that was.
Hope someone can guide me.