Vista and XP computers wireless workgroup/network/internet issues

We just got a brand new HP with Vista Premium, and we cant' get it to see
the other computers in our home network.

We have a linksys wireless usb on the new machine, and the others (except
for one machine) are all running XP.

It connects to the internet fine via the wireless, but it wont' see the
other machines on the network. Should we disable the network adapter that
came with the system? Although that doesn't help, since I tried it. We've
read everything, installed the patch on one XP machine (and got the thing
about it's not necessary since we're running XP with SP3), but it's not
helping. I've checked firewall settings on all the XP machines, and
nothing's out of whack.

Can someone PLEASE help? I have to use the new computer for my classes
starting on Tuesday, and I really need it to see the other computers in the
network so I can move my files from the old one over to it.

Thank you

Nancy Eddy

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http://nancyeddy.com