To lend my support I would also recommend these websites along with your manufacturers instruction manual.
http://www.practicallynetworked.com/qa/qa20040520.shtml
and one other site
http://www.homenethelp.com/web/diagr...r-wireless.asp
I know what you are going through, it does take a bit to get all the settings right.
I set up a wireless network network including a router, wireless access points, laptop with wifi card and wireless pda using Linksys equipment. It was the single best thing I ever did and encourage you to persist.
Don't forget to turn on WEP encryption after you have got the devices talking to each other.
My next project is to stream my MP3 files via Wifi from any of the computers to the hifi.
My eyes are on these beasties
http://www.slimdevices.com/ which is a wifi solution.
or this one
http://www.turtlebeach.com/site/prod...n/indetail.asp which needs an additional wifi point.
At present I use one of these
http://www.xitel.com/ wired devices to play MP3 files from the laptop through the hifi. The laptop is linked via Wifi to the internet.
So much better than running wires around the place.
Good Luck