[dba-Tech] Wireless network

I have a DSL modem and have no problems with it.  I
got a laptop with a built-in wireless card.  I also
got a NetGear wireless firewall router.  When I hooked
it up, following the instructions for once, I got it
to work with my desktop and laptop for a short time,
then, no go.  The laptop stopping connecting to the
internet 1st then the desktop. Now I am connected the
old fashioned way on the desktop and the NetGear is
serving as a nice paperweight.
Anyone have any ideas?  I think it has something to do
with it being a firewall router, but I don't know. I
got it from Gateway, when I bought the laptop, but
they don't support it.

ANy ideas appreciated.
Desktop PC is P4 2.0 with 512 RAM on XP Professional,
the laptop is a Centrino with XP Home Edition.

THanks,
Nancy