To help troubleshoot this problem, go to Start > Run and type cmd then click OK. In the command prompt window that opens, type ipconfig /all then hit the enter key. Write down the output from this command or select it and save it to a txt file, then copy this output into a reply to this message.
Thanks for your help. Here is what the Windows IP Configuration said:
Primary DNS Suffix-- (Blank)
IP Routing Enabled--Yes
WINS Proxy enabled--No
Ethernet adapter Local Area Connection:
Media State--Media Disconnected
Description--Xircom Cardbus Ethernet 100 + modem 56 (Ethernet interface)
On your router, is SSID broadcasting enabled? Is MAC address filtering enabled? Is WEP or WPA encryption enabled? Have you tried power cycling the router? Have you tried resetting the router to its default settings by pressing and holding in the reset button on the back of the router?
Indeed there is a way to set up the connection manually. Open the Dell utility. On the Wireless Networks tab, there should be a button to "Add" a wireless network. If you click on that you should be able to type in the SSID of the network you are trying to connect to.
I only have the latest version of the utility to look at, but I know it is there in older versions as well because up until a few months ago, I was using the Dell utility. On the version I have (184.108.40.206) it is on the Wireless Networks page. As I recall, in the older version (3.1.xxx, I think) it is on the Wireless Networks tab, under "Preferred Networks", where you would click the Add button and fill in the information.