SiS 630/730

while scanning pics into website, i receivedand error message to close IE6. I also had to restart. when i did i lost my ability to use any display setting higher than 16bit. 16bit is the only display choice offered. this happened once before and i disconnected all devices and rebooted and the original settings came back but this technique did not work this time i downloaded new drivers for 98se but nothing is working-anybody got an idea?