When you buy a wireless router, you are going to need a wireless card for your desktop, which can rang from 20-50bux. Usually you're wirelss card is a PCI card, which just means its installed inside the comp. There are some packages, thatcome with both, but not usually, so you'll need to buy them seperately. Good prices can be found on Newegg.com, or rebate items at CompUsa, or Bestbuy.