problems with new wireless NIC

I just purchased a new Dell lattitude 630 running XP pro w/SP2 and a built-in
Intel Pro/wireless 3945ABG Network card (that apparently runs using either 802.11g/a).
I also have a linksys router/AP with 4 ethernet 10/100 ports and that supports 802.11g/b

the AP I have is running

1) WEP
2) 128 bit encryption

I removed mac address filtering

I have another laptop that is connected via the AP, (its using 802.11b) its associated and has an ip via DHCP, however with the new laptop I can:

1) associate with the new AP

I can:

1) get an ip address but ironcially its not in the range of IPS that my AP is handing out, my ip address range is 192.168.100.100-105 my new laptop gets this IP 192.168.0.1

I have:

1) verified that with the new laptop I am associating with my AP and not someone elses' who didn't turn off broadcast and my wireless NIC sees it

I could always try to manually set the NIC to a static address but I really would like DHCP to work, any ideas? Sounds like it could be a driver issue, but the driver is has it the most up-to-date one.

thanks

Hi There just checking, do you have an internet connection running DHCP? If so, make sure you are plugging it into the WAN port of your Linksys router or when your card requests an IP address it will get one from what ever device responds first. Cheers, Dale.