[mountain man]

I have a Linksys Wireless - G 2.4GHz Broadband Router.

I have a Linksys USB Adapter attached to an old Compaq laptop running Windows 2000 Pro. (works fine)

A friend gave me an Intel PRO/Wireless 5000 LAN CardBus Adapter. (5GHz) IEEE802.11a

I can connect to the router/internet using the USB adapter, but it's more for a desktop PC.

I installed the wi-fi card, but I can't get it to work. Is it because of the frequency difference?

I also have an old IBM Thinkpad running Windows 98SE. I've never had any luck with 98 and wi-fi. I'm guessing it's not compatible?

[mountain man]

I think I know why I can't connect to my router with the wifi card.

My router is for 802.11b/g, not 802.11a.

[Axegrinder]

Thats probably why then, 802.11a operates at a much higher frequency (5Ghz) than b/g. (2.4Ghz)