For those who either haven't seen this yet, or haven't seen the updates -- it's a pretty cool application that allows you to use your Sony PSP as a second monitor alongside a PC that's running WindowsXP (or mimic what is displayed on your PC monitor connected to a PC running Windows Vista). It has been recently updated to v0.2, so take a moment to look over the changelog.
New features:
- can now mirror any existing display
- works on 64 bit systems now
- display driver for Windows XP x64
- display driver supports several display modes from 480x272 to 1920x1080
- all resolutions also available rotated by 90