no ip from dhcp

have xp pro on one machine using linksys G (PCI)card,
wpa/psk,auto dhcp - auto, dns - auto, windows handling the
wireless card, no windows firewall, using zonealarm &
mcafee vs. All patches up to date for os. Connects to SMC
Barricade, MAC filter on. Works well.

Have setup another with same settings, same model linksys
card, xp home os (all patches up to date). It picks up the
wireless network connection, but cannot connect to
Internet. Looking at wireless properties, no IP address is
handed out, cannot ping router or anything else. Have
removed MAC filter, mcafee vs, zonealarm, still no joy. I
can set static IP, still no internet connect, no ping to
router.

If I had hair, I'd pull it out !

I've re-run the xp network wizard, removed and re-installe
d the pci card & drivers and re-booted more times than i
can count. The psk has not been ******* up. the ieee802.1x
authentication has been off and on. I've tried different
pci slots. no joy.

I can connect with wire, no problem, ip is provided via
dhcp, that's how i loaded all patches. only wireless won't
work.

any ideas out there ? i tried linksys support many times,
they didn't have a clue. eventually said its an xp
problem...