Yes, firewall installed on XP computer (main). How do I reset it to allow the printer to work? Thanks.
Try to disable the firewall first to see if that helps, if it does allow you to print with the firewall disabled you know it just needs the permissions. Depending on the firewall maker, I believe when I had to set on my parent's computer that runs norton to allow the IP's I wanted to print from full access to the machine. I don't remeber off the top of my head where you go so I can't exactly say that. Sorry, maybe someone who uses the same firewall can help you.
When I set up my home network sharing one printer I used the sharing function of the router instead of XP. Suggest you go to the web site of your router manufacture and you will find there the easy instructions. I used a SMC router and it was a 4 step process.
Good luck.