First, you need to download an winrar then go to http://www.mininova.com or gametorent.com or if you can find anything better then click your game then wait for the down load……enough?

if you are advanced pc user you may download p2p clients most of them are freehttp://dir.yahoo.com/Computers_and_Inter…
but if you are beginner is best for you to pay small fee and join on best psp games download sites likehttp://aplace4games.com/
where you can find step-by-step iinstructions and manuals, special burning software, help and support

Mininova.org and Isohunt =) . Have fun!

friend,
think twice before download it from the free psp download site for 2 simple reason,
1. it is illegal,
2. the site contains virus and spyware, you might crash your PSP by saving a few bucks!
I joined the PSP download site 3 months ago and it allow unlimited download of PSP games, movies and videos for member. It is totally worth for money as I only need to pay a one-time member registration fee of $34.95. No other hidden cost for download PSP games.
check out the review site here