I noticed from your signature that you are using 27.42 Dets. Is this correct or did you not update you signature? What has happened between now and then? That now it works, but before it did not. It might have been a limited set within the driver that you were using.
A lot of problems deal with the video drivers. As you know drivers allow the features of your video card to work. If they are not written correctly problems happen.
Until ver. 30.82 of the Nvidia drivers you could not get the native Windows dual view mode in Windows 2000 to get individual resolutions and refresh rates. You had to use nView and IMHO this did not work for me.
I hope this has help in a small way.
SuperMicro 370DDE/2x1Ghz W/T/take Gorbs/1GB Crucial 133 Reg. ECC/VisionTek Xtasy Geforce 4 Ti 4600 128 mb DDR/SB Audigy/60GB Seagate 7200/2x20GB IBM 75GXP 7200 Raid 0/Linksys LNE100TX/Int. ZIP/Pioneer DVDROM 105S Slot Load/Yamaha 2100EZ IDE CDRW/Antec 1030B/Digital Doc 5/W2K Pro SP3/WindowsXP Pro