Now this isn’t the full PlayStation Store that’s on the PS3, it’s mainly for the PSP. But you can download PS1 games, PSP demos, videos, etc. from the site for play on the PSP. Just choose your region and login and your set. There is some software you’ll need to download in order to transfer the files downloaded from the site to your PSP. You can even add funds to your wallet from this site, view your download list, change your account info, etc. Check it out!

PlayStation Store