I highly doubt that ME has the capability to be teathered via a USB connection. If I recall correctly ME doesn't support USB, or at least only supports USB 1.
Dear God there's someone out there still running ME? Put that machine in a museum!
It's probably time to upgrade, ME was dropped like a hot potato pretty quickly. Perhaps look into a Linux variant (Ubuntu is popular and fairly user-friendly) if your computer is too old for 7 (or XP if you must - but don't blame me when you have issues upgrading to IPv6 or viewing web pages that require SNI).