Sure, "upgrading" to 98 isn't a bad idea, but my connection doesn't work with 98. I should reinstall it though simply for playing a few games when XP is using too many resources.
(I had to remove 98 to free one of my partitions a few weeks ago)
The problem with Star Fury seems to be when loading sounds for me. Is there a way to remove sounds in the game? Perhaps it would help, or perhaps not.