Default [Q] driver for DS

hy guys

my old desire s is now in the hand of my dad and i want to root it i'm on windows 8.1 and i'v even the htc driver (only driver) for the DS but in fastboot i don't see the driver for it i'v searched the driver installed in the pc and they shuld be there...

so can anyone provide me the driver for fastboot? (i'v already use the search button but i didn't found it)

edit nothing to do..installed linux and all goes well
Phone: One X - v3
Desire S (Flinny 10.1 & XS/XSV with Amidabuddha's Kernel)
Tablet: Nexus 7
Laptop: Asus G74Sx