Hi sri2k1,
In order to install the correct driver for the wireless card, you would need to check the wireless card installed on your computer. You can check it from system configuration tab on support website.
You can also check the system configuration from the link: http://dell.to/QVOQWC and then install the appropriate drivers from Support website. Click on the below link: http://dell.to/QjjZDA Enter the Service Tag of your system and select the operating system.
If you are not able to find the wireless card installed on your computer, you can private message me the service tag. I have added you as a friend. Please accept my friend request by clicking on my name highlighted in blue and then click on “Friends” tab at the top and then click on “Request to Review” and finally click on “Accept” button.
I am sending you a private message as well. Click on “Inbox” to respond to the message and provide system’s Service Tag and contact details so I may access your system records and check for further course of action. You could also click on Start Conversation to send a private message.
Please share the findings.