A post I read a couple of months ago indicated that you need rimusbnt.inf as well, although I'm not certain. I grabbed both and everything works fine and the BB's charge faster.
We have deployed the Desktop Light--Just the handheld Manager and not to show icon upon startup. This way, the application is there for drivers, and in case we plan on changing the way the router is configured, the user's will just have to simply plug in their device.
I believe if you just copy the files located here, it will charge the bb on a users desktop (worked on my home pc)
C:\Program Files\Common Files\Research In Motion\USB Drivers
The USB driver is available via Windows Update:
What Is - Research In Motion USB kernel driver available through Microsoft Windows update
Last Updated: 05 October 2005
Article Number: KB-04482 http://www.blackberry.com/knowledgec...519 &vernum=2
If you deploy the HandHand Manager, you can also take advantage of least-cost routing. The handheld will connect directly to the BES Router via Serial By-Pass and route information through the wire instead of wirelessly... if you care about that at all.