Following are some of the registry tweaks for Windows Mobile 5 and 6. Make sure you have a registry editor like SK Tools installed on your Windows Mobile.
Enable ClearType in Landscape mode
To enable ClearType in Landscape mode: HKLM\System\GDI\ClearTypeSettings\OffOnRotation = 0 (DWORD decimal)
To disable: HKLM\System\GDI\ClearTypeSettings\OffOnRotation = 1 (DWORD decimal)
Make WM ask where to install a program
An [...]