My resolution is limited to 800x600. My card and monitor can obviously go higher, but when I check the desktop properties (I'm not at my computer right now, so forgive me if I use improper terminology) the maximum resolution it lets me select from the dropdown box is 800x600. I would attempt to fix this via a .conf file, but I'm new to Linux and don't know where to look for such things.
Graphics card - ATI Radeon AIW 7500
Motherboard - ASUS A7V880 [Via KT880 chipset]
OS - KDE under Fedora Core 4