Win98: Generic USB Flash Disk Driver

ufd.zip
If flash disk connected, and Windows 98 found a new hardware (USB Mass Storage Device)
Click Next
Select Search for the best driver for your device
Click Next
Specify a location in a folder contain this driver
Click Next
Click Finish

Win98: Play WMV file

To play wmv file in Windows 98, you must install Windows Media Format Series Runtime
Get it from Microsoft website