need original file :~>

i tried to change hz to 500 with a program, and i get this

ERROR: Could not find a valid sequence!
Please use Windows' original "usbport.sys"!

can someone give it to me :d
i failed @ google :(

i have windows xp home edition service pack 3

edit: i took usbport from my (hanso the king !!!) who have sp2
i replace it with mine, and used the program, and now it worked :D
and i checked ^_^