I did chat with a person at linksys and he had me look for the wireless listing in stat up ,all programs but there is no "dell wireless listing.The wireless card is a dell truemobile 1150 series wireless. Running win xp professional ver 2002 service pack 2. I had an idea for your "validating identity problem." First, are you using Windows to manage the wireless adapter or are you using the Dell Truemobile software?If the DD-WRT password change page does not display, your page request times out, or you can't ping 192.168.1.1, make sure both wireless and power lights are on steadily first, then do a hard power cycle (unplug the power from the router--do not do a 30/30/30 reset).
You'll need to note the default IP address of the router (usually in the range 192.168.0.1 though it varies by model).
I have a Wireless N Router WRT120, Windows XP, SSID enabled, authentication in the network properties tab disabled and WEP security.
There is a yellow error on my network connection icon indicating that there is limited or no connectivity.
Connect the computer to the router with an ethernet cable.
Open Internet Explorer and enter the router's IP address into browser's address bar as though it was a website.* You should then reach the login page to the router's setup screens.