Premature balding networking stress question..........................
 

Another question you've probably answered a 100 times:

I can connect between computer A and B (which both have XP
pro) but computer C (which has Xp Home edition) is not
recognized by the other two. All computers have microsoft
client chech box checked and file sharing has been
enabled. Set up the Network wizard three or four times on
each as I thought I was doing it wrong. All have the same
workgroup name. All have been successfully pinged between
each other. There is only one administrator account for
each and there are no passwords so that is not an issue
either. Computer C (XP home) reconizes the network as
there in an icon in under 'My network places' however I am
denied access when I double-click it.
Computer A and B (both XP Pro) do not recognize computer C
on their network places even after I mapped the network
drive but they seem to able to share between the two of
them fine. I have gone through the troubleshooter over a
half a dozen times and have exhausted all my knowlegde.
There must be a simple answer. Any suggestions?
VERY much appreciated!

Ashley