Hi
To create a Wireless connection you need at least two Wireless cards, or one
Wireless card and a Wireless Router.
http://www.microsoft.com/windowsxp/u...mspx?pf=trueHi
If you already have two wireless cards you can connect them together by
configuring them to Ad-Hoc mode and using Windows ICS for Internet Sharing.
This method is not very secure and night be quite quirky.
If you do not have two cards you can find a Wireless Router that is only few
$$ more expensive than an additional card. With Wireless Router you would
get much better results.
Topology looks like this, http://www.ezlan.net/network/router.jpg
Jack (MVP-Networking).

"CM" wrote in message
news:EF0590A2-CD26-49C8-A9DA-02F8ACF4F376@microsoft.com...
>I have 3 pcs on a peer-to-peer wired network. One PC has a WiFi card. Can I
> share Internet connectivity with the PC that has the WiFi card (without
> having to buy a WiFi router)
> --
> CM