how can i copy my psp/psn games to laptop then back onto psp

i mean that if i run out of space on my psps memory stick i want to be able to copy it to my hard drive so if i want to play it in the future i can then just copy it back onto the psp

now the problem is that when i put it back onto my psp it says something about copyright, even though it origonally came from that psp

anyone??

Yea, If you're not using Media Go You have to make sure you copy both the game file and the License file, I think

i did hear something about copying the licence but since in my licence folder it has i think 10 different ones and i dont have any idea which one is the right one