blazer2loud 0 Newbie Poster

I don't know much about networking at all. I started a thread asking the easiest way to link 2 computers to file share between them and was told to get a crossover cable. I got the cable and now am trying to get the files to share. I have one laptop running xp pro and one laptop running vista. On the vista computer I see the C: of the XP Pro computer but on the XP Pro computer I don't see the vista C: What steps do I need to go through to try to find the other computer?