Internet Sharing With XP Pro & Windows 7 Home Premium?

I recently bought a Toshiba Laptop with Windows 7 Premium 64bit . I live way out in the middle of nowhere and the only way I connect to the Internet is with my Alltel UB150 Usb wireless card.

I found out that my wireless card is not compatible with Windows 7. So, I am not able to connect to the Internet with it. I could go with a 3G router but I don't really have the money right now...

What I would like to do is use my Desktop that has XP Pro as the host. Using my crossover cables, either a hub or switch, network the two. The Windows 7 would be the client. That way I could still access the internet on the laptop.

Could someone let me know how I can do this?