Needed help with Automator - System Prefs

Hi,

I'm hoping to make an automator workflow that changes some system preferences that I have to change frequently in switching between a work computer and media center.

When it's used as a media center it's setup with a lower resolution to match the TV and the energy settings and screensaver are set to never be used when in media center mode.

Is there a way to use automator or even apple script to change the resolution, energy, and screensaver settings back to my normal settings?

I tried using the record option in Automator but it doesn't seem to recognize anything specific at all.

Could someone please help me set this up?