CentOS - Jun 2007 - Wireless networking with CentOS 4.4 on Dell laptop

I have a (new) Dell laptop with CentOS 4.4 installed and am trying to
get wireless networking. The list of drivers doesn't include a specific
one for this card - Dell wireless 1390 Mini PCI network card 802.11b/g
(according to the manufacturer's blurb). Any ideas as to where I can
find the appropriate driver please?

Andy