I knew it would only be a matter of time before somebody came up with a video out kit.
I'm GUESSING that it will work like the GBA video out kit... which means, (while they say "no soldering" is needed) you'll still have to open it up and slip the video out flat cable into the video flat cable feed that goes to the lcd screen.
Sadly though... since the GBA didn't really have moving parts, it wasn't much of a big deal opening it up.... I'm MUCH more scared of doing that to my PSP... not to mention, it looks like the entire outer shell of the PSP will have to be replaced with this kit.... and, I'm not too sure how you'll access the UMD cover.
A great and welcome idea... but, again, it looks like it might be more trouble than it's worth (at least till the PSP's go down in price).