Uhh, when you are looking for drivers, you should look at official things first.
So let's head to Kingston's site and investigate. We get an FAQ that goes so:
Kingston said:
Issue: Does Kingston offer Windows 98 Second Edition (SE) drivers for my DataTraveler?
Resolution: Unfortunately Kingston does not offer Windows 98SE drivers for this drive. However, some end users have reported successful installation with a generic Windows 98SE - USB Mass Storage device driver. This driver can be downloaded free of charge from a third party vendor at, *www.technical-assistance.co.uk/kb/usbmsd98.php.
So head there and try your luck.
But also look at this generic link: *www.kingston.com/support/USBFLASHDRIVES/default.asp
I took that information off the first drive there, which apparently has no 98/SE drivers. A few of the others do, but since am not sure which is your exact drive, its upto you.