Ditch the router - you don't need it. I have to assume you connect to the internet via your desktop pc (usb modem?). You just need to buy a wireless card for your desktop, install it and follow the instructions in the link I (and Fruit Bat) posted. You don't need an ethernet port on either pc. The article mentions the modem connecting via an ethernet port, but it works just as well with a USB modem. Also it's easier to set up if you don't enable WEP until you get both pcs talking to each other, just make sure you do enable it as soon as possible. Post back if this isn't clear.