I recently bought a used flat screen monitor from goodwill. It is a westinghouse L1975NW 19 inch widescreen, optimized for 1440*900 resolution. I plugged it into my computer, and it works, but my display properties only give me two choices of resolution 800*600 at 16 bit or 1024*768 at 8 bit. When I look for the monitor in device manager it calls it default monitor. Why can't I get more resolution and color from it? Why does device manager not identify it? My video card is ATI-264Vt2 PCI.