usbenchi.sys

when i connect my ipod(30G.B.)to my computer (XP) , the screen "DO NOT DISCONNECT", in the ipod does not appear. also in xp, only the message "AN HIFG SPEED USB CONNTECTED IN A NON-HI SPEED USB PORT". WHEN i went to device manager a YELLOW QUESTION MARK was on the usb mass storage icon. when i...