We are all happy with the new PlayStation Store for the PC ([Register or Login to view links]) and i have been playing with it for a bit.
The first thing I did was login with my PS3 PSNetwork Account, and was perfectly greeted. Then I noticed in the options that I could activate my PSP to get the goodies from the web. I downloaded the program (The PSNDownloader [PSNDownloaderSetup.exe]) And installed it.
I have a 3.52 M33 v4, and while I was downloading it, I realized that it needed the 3.70 version at least, so I then put my PSP to charge to do the upgrade (still charging atm). I then downloaded the Activation & Deactivation files, and saved them to my HDD. To make time, i opened them, and found that its quite simple files: