Installing Monitor Driver

I have upgraded my OS from XP to Win 7-64 and can't figure out if my monitor is set up correctly.

I have a NEC 20WMGX2 installed and Win 7 shows it (the model name) on "Devices and Printers" and "Screen Resolution" screens but when I go into Device Manager, under monitors is listed "Generic PnP Monitor" If I try to update the driver through Device Manager for the monitor by selecting the one I downloaded from the manufacturers page (.inf and .icc files), I get a message saying "Windows has determined the driver software for your device is up to date" and shows the "Generic PnP Monitor".

How can I tell if my monitor is really "installed" or not? How do you install monitor drives?

TIA for any and all help!

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