Thanks to your great how-to guide I was able to get my XP computer to transfer files to my new Win 7 computer via my wired network. I was even able to connect my printer so it'd print through my Win7 machine, a first for me.
The problem is I can't things to work the other way around. In other words, I can't access my XP computer from the Win 7 machine. I can see the computer listed, both have the same workgroup name as directed, both the public and the folders I changed to shared are visible when I open the Network Library. I can even open the XP computer on the network to see the shared folders inside. Still when I doubleclick even the shared folder I can a popup window with the attached error message.
I have Norton Internet Security 2010 installed but I don't think it's interfering as even with both firewalls turned off I can't access the XP unit. I've always seemed to have problems with this particular computer as far as network sharing is concerned. I was having similar problems when I had two computers that were both using XP. I probably messed up a network setting somewhere. I can tear down a PC and put it back together but networking is not my strong suit. Any advice you can give is appreciated.
Edit: FYI, my XP computer does have Computer Administrator permissions.