cannot see the network adapter option in device manager, help.

Hi... long story... got a virus and had to resintall Windows Vista.  At first I was able to see the Network Adapter option in Device Manager, but couldn't find a driver.  Then somehow when trying to locate a driver, I lost the Network Adapter option.  Now I can't even "load" a drive if I had one.

How do I get the Network Adapter option to show in Device Manager so I can load a driver to my Dell Wireless card?

oh btw... this is on a Studio 15 laptop.  ... and yes, I have the wireless card switch turned on.