1. Put your PSP in USB Mode.
2. Click on "seplugins", then click on "nitePR".
3. Now make a new text document. (File-New-Text Document)
4. Each game has its own individual title for the text document you make. For example, the text document's title for medal of honor heroes 2 is "ULUS-10310". Find the title for the game you want codes for by looking in the code database.
5. Now once you have made the text document and titled it appropriately for your game, you find codes for the game. You copy the codes and paste them inside the text document of the game you got the codes for.
6. Now you're done. When you start up nitePR with a game you put codes for the codes will appear. Remember, you access nitePR by tapping the home button twice then holding volume + and - once you start up a game.