Belkin has a new wireless card that fits in the ExpressCard slot of your notebook. The Belkin N1 Wireless ExpressCard supports 802.11n draft:
Why go to 802.11n? One phrase - more bandwidth. More bandwidth means you’ll be able to handle applications such as streaming high definition video clips, transferring large amounts of data quickly, playing online games etc etc. Unfortunately this device only works for the ExpressCard slot but never fear!
The Belkin N1 ExpressCard will retail for $119.99. A PCMCIA version is also available for $99.99.