|You just use the term "flash drives" which is really a broad term. There are numerous types of flash drives which are accessed in different ways. However, responses so far have assumed you mean USB flash drives, often called pen drives, so I'll continue that assumption.|
I highly recommend using the generic driver provided here:
Use the w95usbflash11.zip version. It's small, simple, and works great. You just need to get the files in the zip file where the Windows 98 machine can read them, insert any USB pen drive into a USB slot, Windows will "found new hardware" and you just point to the .inf file and Windows will install the driver. From then on, Windows will use this driver for any USB pen drive put in the computer. So far, it's worked perfectly with every make/model I've tried.
Also, all of the different flash drives I've used are all called USB 2.0, but they work fine with USB 1.1, which most Win98 machines will be. The manufactuer just emphasizes conforming to 2.0 because it works much faster and anyone with a newer computer wants that.