Once you install PSPDisp and tether your Sony Playstation Portable (PSP) to your computer with a USB cable, you can use it as an independent display. Widgets, instant messaging windows, etc. can all be placed on the tethered screen. Additionally you can reverse the video and have the display on the PSP appear on your computer monitor. If you've never messed around with homebrew PSP software before check out the wealth of information at PSP Homebrew to get your feet wet.