hopfully someone can help

i am trying to set up a network in my home i have a xp pro box(hard wired) and a win2000 pro laptop(wifi) connected to a lynksys dsl router connected to the internet through a dsl modem. Both machines are able to connect to the internet and have no problems. But i can not see the machines from each other they are both in the same work group.

I am at stand still any help