The following are configurations that can be made to the SageTV and SageTVRecorder applications:

 
Customize Recording Quality
Quality settings for the PVR 250/350/usb2 and Provideo Series cards can be added by modifying the properties file.   Here are the detailed instructions for the Hauppauge cardsand Provideo cards.
 
Translation Files for Localization
SageTV users can take advantage of our current French and German translation files to localize the SageTV experience. The specific files are available in the User Forums within the Germany User Group and French User Group (coming soon). If you would like to create your own localized translation for SageTV, please download the instructions from our website.
 
EPG Data Plugin
If you live in Canada and need an EPG data source, try the DigiCasa plugin. If you live outside of Canada or the U.S. and have access to another EPG data source, you can try the third-party XMLTV plugin. Here is a fee-based XMLTV plugin for Australian users from IceTV. These plugins are not supported by SageTV so you will have to rely on other users and the author for support. If you're feeling ambitious, try writing your own EPG Data Plugin.
 
Hauppauge Media MVP Client
If you own a Media MVP from Hauppauge, it can now be used via SageTV's built-in Media Extender support.
 
Setting Up Network Encoders
SageTV may be used with encoding cards across a home network.   This paper describes how to setup the network encoding feature of SageTV, which is available as of v1.3. This can be used as part of a single or multiple tuner setup.
 
Tuner Plugin DLLs
To control your DirecTV receiver with version 1.4 or later you no longer need to download any additional software.  To control your Satellite receiver through a Serial Cable with version 1.3 or earlier, please download the appropriate DLL file. The Tuner Plugin can be used with Girder for event control (serial or infrared), with DTVcon for serial control of satellite receivers or with any generic EXE to perform tuning. Further information is in the readme.txt file contained in the ZIP file. More information on controlling a Motorola DCT2000 series cable box.
 
Additional TV Tuner/Capture Card Support
SageTV and SageTVRecorder may work with other TV tuner/Capture cards but has only been tested with the compatible ones listed under System Requirements. To test the compatibility of another card, download the trial version of SageRecorder. We are also currently testing other MPEG-2 Encoding cards and will keep you posted on our progress.
Looking for SageTV System Ideas?

http://mta.techno.org/sage/
DigiCasa Una System Review
Configuration Papers

SageTV User Guide
Hauppauge Cards & Recording Quality
Provideo Cards & Recording Quality
Setting up Network Encoders
Writing Your Own EPG Data Plugin
Controlling SageTV Using Windows Messages
Write Your Own Plugin to Control SageTV
Write Your Own Plugin to Display the SageTV User Interface on Other Devices or Remotely
Language Translation/Localization of SageTV
Writing a Media Player Plugin for SageTV
More Downloads

XMLTV plugin
Hauppauge Remote Shortcuts Diagram
Streamzap Remote Shortcuts Diagram
EXETunerPlugin
IceTV