Best way has to be LapLink - I use LapLink 95, but there's probably a later version. Check
http://www.travsoft.com . You can also set up a peeer-to-peer connection between the two computers, but haven't been there, don't have that tee shirt.
Do you have the right parallel cable? The correct cable cross connects two pins - can't remember which and can't find the scruffy piece of paper I had it written on.
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Feline
(I Sit, I Watch, I Smile)