Hi. I have no wireless router and would like to connect with a laptop to the internet using it's built in Wi-fi. The way I was hoping that would work was if I could buy some sort of (preferably USB if stable) device that I plug into my desktop computer to give it some wireless capability and just let it share it's connection. Is this possible and not too costly? What kind of device would i need, link to examples would be appreciated. The desktop runs Vista x64 and laptop would be XP home if it matters. I know nothing about networking and is the thing I dread the most when it comes to computers.