Hi
Wireless USB adaptor behaves like a regular Network adaptor as far as the
host PC is concerned.
The laptop would connect to the Host PC via cable thus Wireless security is
Not an issue.
Beside the Wireless USB you need a wired Network card on the Host PC too.
Configure ICS between the Wireless card, the second Network card, and the
Laptop.
ICS would maintain it own IPs as a second Routing to the main connection.
http://support.microsoft.com/kb/306126
Jack (MS, MVP-Networking).

"Microsucks" <guest@unknown-email.com> wrote in message
news:26e0657432c2f3f33eed86607e572df6@nntp-gateway.com...
>
> My post is detail deficient because I am not computer proficient, just
> willing to learn.
>
> Here is the WiFi antenna I use: 'Wireless Adapter --- USB Adapter'
> (http://www.superpass.com/SuperUSB-A20.html) It is a stand alone
> antenna with wifi card built in and connects via USB 2.0 to my Vista 64
> Dell Insperion 530.
>
> I want to share it with the wifes laptop XP via a CAT5 crossover cable.
> I just dont know how to share a USB connection. The manufacturer says
> it is possible but doenst give specific advice.
>
> Since my network is WPA secured, I wonder if the laptop will have it's
> own IP address and how will trying to use a shared connection and
> entering the same WPA password on both machines.
>
>
> --
> Microsucks