Hello Sundeep B,
I greatly appreciate your continued assistance with this matter.
I was finally able to successfully do a clean install of the OS. I followed the instructions on the correct order to install the drivers; but, when I got to the wireless network card, I ran into an error. I tried installing the original driver recommended from Dell through my system's service tag, the driver that you recommended earlier in the thread, and another that I had found and mentioned in an earlier post - in all cases, I got the following message: "No compatible hardware found. The software you are attempting to install is not supported on this system. The software will not be installed. Setup will now exit." Also, the 1390 card is not shown in device manager - the only item under Network Adapters is my Broadcom ethernet controller.
Where do I go from here? Thanks in advance for any help.