Hi cldmonet,

To install  wireless drivers for the computer please follow the below mentioned steps:

1. Visit the following website: http://dell.to/Mbe3zg
2. Enter the Service tag of the computer in the box provided and click “Submit”.
3. In the next page, click drop down arrow to select the Operating System which is installed in the computer.
4. Under category Network, select the drivers accordingly and click “Download File” and save the file on desktop.

I have also provided a link below for the wireless issues: http://dell.to/ZKyq8W
Please let me know if you have any other queries.