XP Home: want to set up 2 wireless laptops and 2 wired pcs: share 1 printer

Howdy!
I have a small office set up where I have 2 wireless laptops. a wired laptop, a wired PC and 1 printer. To test, I ran the wizard on both of the wired users. I try and click on the other system when I see it in the workgroup and get an error message that I do not have access permission: network path not found. Both are logged on as admins. Man, do I need some help!