appreciate any suggestions. I periodically experience lockups primarily when switching views, panel to spot for example. I often get the dreaded Microsoft window, closing the program or I have to reboot. I recently changed display settings to 1280x1024 from 1024x768. This was done to reduce my numerous icons to a smaller size. Intuition tells me I may be taxing my graphics card more with the new settings? Might this be the cause?

P4 @ 2.4G
Visiontek GF4 MX420   64meg
512 ddr ram
17" monitor, 40g hd,  all sliders maxed

Sorry for not including driver info. I am running DX9, dont remember driver number but got the impression it was the latest. My problem began long after DX9 and driver was installed. I am running 2002 Pro