So, if I understand this correctly.. You're not actually loading the game onto the PSP but, instead, you're just using the the PSP's controls and screen to play the PS1 game.
It's kind of cool - would be nicer if I could copy the PS1 games to the PS3's drive and then download them to the PSP for travel.
Using this current method, if I understand it correctly, it basically means I can play a PS1 game if I'm near enough to the PS3 to put it in (kind of a: Yeah it's cool, but I'm already there so why not just play it on the PS3?)
I'm going to try it tonight. I'm still lost on the whole point of the Remote Play stuff as, while it seems neat to have it (technically), it seems like it's use is limited (practically).