if both computers have network cards, then the one with internet should create a diskette which when executed in the other computer will enable connection between the two.
first internet sharing must be enabled in the computer with internet. this can be done in control panel, under add/remove program. one of the tabs will have that option. when that's enabled, then u can create that diskette.
physically, u need a network cable 2 run between them. a minimum of 10 metres is needed, i think.
anyway, if that is the path u choose then let me know so i'll provide more info.