Each additional PC on your network requires its own wireless adapter. You'll also need to run the Network Setup Wizard on each network PC.
A wireless adapter can be a small external device that connects to the PC via USB, an expansion card that installs inside your system unit, or a PC card that inserts into a laptop PC's card slot.
Configuring Older PCs
If a computer is running Windows 98, Windows Me, or Windows 2000, you need to run the Network Setup Wizard from the Windows XP installation CD.