problem with LAN still persists

[steven]

I set up a LAN , which works fine. I have 3 computers and a printer 
and the Internet all work fine.
My continuing problem is that 2 of the computers have Windows XP 
home, and one has XP pro. The 2 home cannot download from the xp pro 
or upload to it. The pro can download to the home. All shareable 
files and directories are visible on all machines.
I have turned off simple file sharing on the pro, that didn't help. I 
tried turning off the firewall that didn't help. I have tried reading 
as many KB's as possible, but still haven't found anything to address 
the problem. Most material addresses problem with the network of 
which there is no problem.
Can anyone suggest someplace to look to find the solution. or has 
anyone come across the problem.
I want to be able to store files on the XP pro and be able to use 
them on the home. This is a wireless network, but it works fine. The 
only way I can get files from the pro to either home computer is to 
download them from pro to home.

Thanks
Steve
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