Found this on the HTC Hero Facebook Page:
I've spent the last couple of hours trying to figure out why HTC Sync would not allow me to use the Mobile Network Sharing (MNS).
All morning, I had assumed that my notebook was using the MNS as I was able to access Facebook from the office. Turns out that I was latched onto a secondary WiFi access point without realizing it.
So, after installing HTC Sync, all other drivers installed fine, except for the NDIS driver which is needed in order to use MNS. I searched high and low to find a download for the driver, and finally found it.
For those of you who are missing the driver (not sure? Open Device Manager, and see if you have an Android Phone device that is showing up as an error), go to your Program Files folder, look for the HTC folder, and in it, you will find HTC Drivers... that elusive NDIS driver is stored there.
Just go to Device Manager, find the Android Phone device, right click, select Update Driver, and get it to find the driver from the folder above. Once the driver is installed, getting online is easy
From the Hero, select Menu -> Settings -> Wireless Settings -> Mobile Network Sharing
Odd that there's no icon in the Windows system tray, but hey, it works, and I'm not complaining.
** this topic was posted from my LG notebook while connected over the Hero's mobile connection.