The Windows 98 drivers for the USB "X drive" ("xdrive"/"usbdrive") -- a USB flash storage dongle thingy made by Samsung are available here. This is a zip file of the contents of the CDROM that came with the device.

For later versions of windows, you don't need drivers - just plug it in.

For linux, if you're lucky then you can just plug it in and mount it with a command like 'mount -t msdos /dev/sdb1 /mnt/usbdrive'