Dual Monitors on Geforce4 MX 440 (DVI and VGA)

Hey, I have a 64mb Geforce4 MX 440 AGP8x with DVI and VGA outputs on the back. I have an adapter for the DVI output so I can plug in a VGA monitor. For some reason my computer wont recognize that I have a monitor plugged in to the DVI output. Soooo I was just wondering if I am completly missing something here. I have a friend with the same card and his does the same thing. So if anyone has any insight that would be awesome.