smz

It's a very simple concept actually. Many smart usb driver authors will tell you to unplug the device once you start the driver install process. you don't want the unknown device present at that time. You really want the plug n play system to redetect it and immediately find the new driver you just installed. It pulls it from \windows\inf or \windows\inf\other... if you do this before installing the driver the driver for the device you are trying to install will never be copied into those default inf directories.

A note about the older install shield program.. Vista has a bad habit of installing programs with certain older install shield wizards, of asking the user after the install looks complete if you want to reinstall the software application/driver using the default recommendations for vista. It's usually pointless but i let it repeat the process.