Me too have Win98 SE . BTW, there is an icon on the Start menu, settings[Windows Update], I guess it should be similar to these links. There are a lot of fixes, updates & patches which can be used as addons in Win98SE. Win98se users try that also.
well watch out guys . this was discussed last year in the forum and i managed to fry my pc with the unofficial service pack for win 98. had to format and lost all data.