There exists a pretty long list of tips and tweaks for the HTC HD2, but editing the registry can be intimidating.
BsB Tweaks 1.1 lets you apply many hacks and tweaks to the HD2 with only a few taps. It also features a great user interface.
The application features:
- Many Tweaks and Reg changes.
- Rotation: Add rotation support to any applications easily.
- Pinch to Zoom: Add zoom support to any application easily.
- Data Connection: Enable/Disable Data connections.
- Manila Language: Changes manila language.
- Take screenshots of the screen when shaken!
For a full lists of tweaks and the cab download see this XDA-Developer thread here.