Not sure. We were talking about a wireless problem and it looks like you have downloaded and installed a driver for your wired adapter.
Does the laptop in fact have an integrated wireless adapter or are you using a third party solution? Does Dell show a wireless adapter driver for your model when you look for drivers at their site?
Is device manager showing any indication of another device (network controller) as being present but perhaps without drivers installed, perhaps under "Other Devices", or anything with a yellow symbol associated with it?
Can you plug in the laptop with a copper Cat5 cable and get on the internet that way?
Had the laptop been working wirelessly prior to your recent format and install? Can you tell us the reason for the clean install? Can you provide the system specs for that computer including Manufacturer's Name, Model Name, Model Number and any other numbers of significance which might help us help you identify the product and what it might need regarding a suitable wireless driver?
EDIT: According to this Link Removed - Invalid URL it would seem that you could have any number of wireless adapters installed from the factory. They could be either Dell branded or Intel, etc., I am hoping that the service tag number might help narrow down the specifics for you.
In addition you may have to install R130907.EXE (7MB) under Applications, which is the Dell Quick Set Utility which supports your function keys and allows you to turn on and off you wireless network adapter.
You may also want to check out R120775.EXE (7MB) under Utilities, which I believe supports some automatic updates from Dell which may also help.
Regards
Randy