I'm not exactly sure what M Craig was talking about. I have heard of serial
which can connect the two. When I only had 2 computers, I just got a router.
I found it easier, especially now, as we have about 4 laptops and 1 computer
now!
I've always recommended getting a router, a family with 2 machines wanting
to link the internet and printer - and I told them to get a router.
Also, if it is connected, although with a router, if the main computer is
on, you can't print on the other one, with a cable, you won't be able to
print OR use the internet!
I think you should just go ahead and get a router, as if it is serial, most
modern computers don't have that port!
Harry