Hiding a XP Computer from Network Neighborhood
If you want to share files from a XP computer but want to keep it from
showing up in the Network Neighborhood. you can easily hide the computer by
choosing Run command from the Start menu and typing the following command, and
click OK to execute.
net config server /hidden:yes
To enable showing your computer in Network Neighborhood all you have to do is
follow the same procedure and replace the "yes" at the end of the command above
with "no"