MTP device driver install failed- Vista

OS: Windows Vista Buisness Edition
Device: Zen Vision M

Hi guys, I've had this Zen for almost a year now, it docks jst fine with my win 2000 rig, however it fails to work with my vista laptop.

I plug in the Zen, the "installing device driver" icon comes up in the sys tray, after a few moments it says "driver install failed."

It recognizes it as a MTP device when it is loading.

The zen screen shows it as "docked."

Help!!
Gimpster