I also found this on life hackers for android tethering:
http://lifehacker.com/5447347/how-to...-android-phone
they list 3 methods:
Method 1: Tether Android with Apps that Need Root (Free, heavy configuration)
Method 2: Tether Android with Proxoid (Free, no root required, some configuration)
Method 3: Tether Android with PDAnet ($30, no root required, minimal configuration)
Don't know if they will work for our build, but will try.