People keep bumping this thread.
As for TV out on all PSPs, just read this.

Slim was designed for TV-out.
The Original PSP was not, and therefore needs a third party attatchment. It's called PSPonTV and it's a giant trapezoid-looking box that you put on your PSP, allowing TV out.
Go here to buy it:
http://www.pspontv.com/
But you might as well buy a Slim with the money you'd have to pay for it.