So we don't need to rewrite the same stuff, please read all of the posts in the link below:
Hope this helps.
I am using a 2Wire 1701HG DSL router as the hub for 2 Windows XP-home based computers.
I have connection and surf to the internet.
When I look at the network settings, I see both computers, I have files in the "shared douments" folder but cannot "see" the shared documents folder on the other computer,(form either side).
The printer is an "all-in-one" HP PSC 1610 hooked to one computer via USB, can't see if from the other computer.