Ok Im assuming you mean cassette tape, but in general you would have to connect the tape's "line out" to the computer soundcard's "line in" normally you would do this by hooking up an adapter the goes from a "dual rca" to a single "mini 1/8th" jack. depending on how long you want to record you could be screwed unless you have some sort of software that will let you record onto your computer, besides the computer's sound recorder. Do you have any kind of audio software?