Mostafa,
You can't run Spinrite directly on the USB drive from within Windows - and you probably won't find DOS drivers for your USB drive. See the Spinrite
FAQ.
What you have to do is create a bootable floppy / CD / USB memory stick using the Windows portion of Spinrite.
Then remove the hd from its enclosure, and (assuming it's the same form factor as the laptop) swap it with the HD from your laptop.
You then boot the laptop with the bootable medium created above and THEN get Spinrite to do its stuff.
If it's a full-size disk in the firelite, then you need to get hold of a desktop PC.
Have you tried accessing the firelite from another PC?
SD