Hey. I currently have three computers two of which are on a wireless ad-hoc network. All of my computers are running windows xp home. I get internet access from my broadband computer downstairs and successfully share a printer and files, all to one of the upstairs computers. The only equipment I use is two wireless network adapters. one on each computer. what I want to know is whether I can buy another adapter for the third computer and join the wirless network I currently have, or would I need to buy extra networking equipment?