PPC Configurator is a free application from XDA Developers that contains a list of predefined tweaks for your Windows phone which you can apply easily.
PPC Configurator consists of the following sections:
-SIP Configurator which allows you to select which of the on screen keyboards are active and shown in the list to choose the SIP from.
-SMS Configurator allows you to easily switch between threaded and classic text message display, as well as enable or disable the SMS Sent Notification.
-SIM Contact Configurator for enabling or disabling the ability to show Contacts from SIM card.
-Calendar Configurator for enabling Lunar Calendar.
-Lock Configurator for enabling Auto Lock on the device.
Additionally, it has the option to Soft Reset your device after applying the settings chosen.
(Via: XDA Developers)