I have a Netgear (not wirless) adsl moden coneccted to my main computer but want to get internet in my bedroom desktop computer. I want to know how to do this.
Hello and welcome to Tom's Hardware Forums.
Guessing that you don't want a cable to run from the router to your bedroom, why no consider powerlin networking. You cable from the router to a unit which plugs into your electric mains circuit. Plug another unit in the bedroom and cable that to the computer. Two standard Cat 5 cables and the powerline units are all you need.