We’ve recently posted about how to add autorotation to the Windows Mobile Facebook application by editing the Registry.
Well, if there are several applications you’d like to be autorotated, Registry editing could be a hassle but luckily there’s an application to configure the automatic rotation on HTC devices equipped with a G-Sensor (currently tested on the HTC Touch HD and HD2 but it should work on others as well).
All you need to do is download and install the CAB to your Device, start the application you want to add autorotation to, start HTC GSensor Config and choose to Add From Run Applications. The app you want to be autorotated should be in the list so you can check the box next to it, after which apply the changes and Soft Reset. Autorotation will be supported for that/those application/s.
Thanks for the tip, @hvoltage!
(Source: XDA Developers)