Simply the best way to tether your rooted Android device!
This program enables wifi AND bluetooth-tethering for "rooted" handsets.
** PREREQUISITE **
2) Netfilter-enabled kernel
v2.0.2: Displays battery-temperature. Support for new devices (including HTC Evo 4g). See developers-page.
It is possible that use of this program may violate your carrier's Terms of Service.