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)