More than half the Flash drive models no longer provide drivers or support for Windows 98, Windows Me, or Windows NT... and soon W2K. It is part of the initiative of Microsoft to assure that major productivity participants do not support the OS that Microsoft does not support.
I invite you to go online to any of the current USB 2.0 flash drives sold at various online stores, then search for their disc or software download.
In our August survey, we found that three of the five models sold at our local Wal-Mart no longer had drivers available.
It varies by area... but they are fading out. Had an old but terrific Compaq DeskPro EN 866 Mhz Pentium III, and a Gateway Performance 933 Mhz Pentium III (six USB ports) for which none of the five USB flash drives available from the people in the room had downloadable drivers for Windows 98SE.