How do I setup a Roger Highspeed wireless internet gateway?

I am having trouble setting up my rogers SMC8014W-G wireless internet gateway/modem. Each computer can ping the router, but most times, the computers can't ping each other. Occasionaly, I can see one of the other networked computers in My Network Places, but thats about it. The computers I am using are: 1 Vista Basic laptop-Wireless 1 Vista Premium laptop-Wireless 1 Vista Basic desktop-Wireless I also have 1 xp laptop that will occasionally be hooked up to the router using a cable. Please help me. Thanks

Can they all connect to the internet? If they can, you have set everything up correctly (most likely) Have you ran the "New network connection wizard"?