Provided by NeTV forum member ChamaIce, from post created somewhere on the web by user "mu7efcer":

Windows 7 has the driver it needs already, but it won't set it up by itself. The driver you want is under "Microsoft Corporation" > "Remote NDIS based Internet Sharing Device."

Instructions for USB Unix device on Vista and Windows 7 by mu7efcer
1. Plug in to USB on Vista/Windows 7
2. In wizard that comes up asking for driver software, I chose ignore.
3. Then I went into the device manager, by right clicking on "My Computer" and selecting "Manage", then clicking on "Device Manager"
4. There was a device called "USB Ethernet Gadget". I right clicked on it and selected "Update Driver Software..."
5. In the wizard that came up, I clicked "Browse my computer for driver software"
6. In the next page, I clicked "Let me pick from a list of deice drivers on my computer"
7. It asked me to pick a type of hardware. I chose "Network Adapter"
8. Under "Manufacturer", I chose "Microsoft Corporation". (Note: this is not the same as "Microsoft")
9. In "Network Adapter", I chose "Remote NDIS based Internet Sharing Device.
10. Then I clicked Next.