Setup the XP Remote Access... there are many good how to's on net... but one is
http://www.pctechnicians.ca/help/remote.html
for more detail or other discussions just google windows xp remote setup
however...remember the programs are running on the XP machine so calls to ports will be the ports on the XP machine... not the one in the shop....
So if you're wanting to run control software which talks to the port, you HAVE TO run those on the P166