If the maximum resolution shown is 1024X768, and you've got the correct video drivers loaded, then you have an XGA panel.

The panel reports its maximum resolution through the video BIOS on the system (which is why only certain panels work with certain notebooks).

Yeah, that's what I'm ultimately trying to achieve - be able to use the maximum resolution of the display, if it can go beyond 1024x768. So far the video driver maxes out at 1024x768, so I'm hoping that installing the right display drivers will allow me to go higher. If the display can, of course.

Take apart the display. I've never ever had to worry about your problem but I also never use Win 2000 as my operating system either.  XP or any other version of Windows does not care because the video driver takes care of all this. The only thing that is helpful to know is whether the screen is XGA, SXGA+, or UXGA.  You can usually narrow it down a bit by looking at the printing on the end of the video cable under the keyboard. If XGA it should say so, if it says SXGA+ then it can be either SXGA+ or UXGA.  The UXGA's on this model are rare.

funtoupgrade

The video card (ATI Radeon Mobility) drivers are installed. Displays also have drivers, telling the video driver the maximum capabilities of the display (supported resolutions, refresh rates and so on). Dell's driver download page also includes a section for "Display Devices" with 23 display models. I just don't know which is the right one. The online help says to look for the configuration in the original purchase documents, but I didn't get those from the original owner.

Dell Latitude C610 display specifications indicate that either XGA (1024x768) or SGXA+ (1400x1050) displays are available. I only had to remove the "center control cover" and keyboard to get to the display flat cable, on which it was clearly inscribed "XGA". So, no higher resolutions for me. Oh well.

Thanks for answering, everyone :)