Today Sony unveiled the Playstation store for the PC.

The new store allows PSP owners to get video content, services and buy games without a Sony PS3.
Available immediately, full-game downloadable content exclusively available on PLAYSTATION Store for the PC include titles such as Syphon Filter: Combat Ops (price: $9.99). You can also download existing PSP games such as Gangs of London and WipEout Pure, as well PS One classic titles including favorites such as JetMoto and Crash Bandicoot.
In addition, trailers for forthcoming titles, add-on game items, promotional videos and themes for PSP that allow you to customize your PSP menu color, background and icons of XMB will be available through the PLAYSTATION Store for the PC.

You can visit the Playstation store from your PC here.