wow you really should do some research before just downloading games you cant just play these games you need a mod chipped ps2 or soft modded ps2 or you need to disc swap but thats a whole other story
- Intall open PS2 Loader on your PS2 memory card.
- Download USBExtreme.
- unrar the game.
- mount the game in a virtual drive (Daemon tools for example).
- Use USBExtreme to convert the game(s) you want on your computer hard disk.
- Copy the converted games on a flash disk.
- Now you have your game(s) installed on your flash disk.
- Use the flash disk on your PS2 console with the PS2 memory card (where open PS2 Loader is installed).
- Reset your PS2 console then it will boot with open PS2 Loader creating for you a list of your games.
- Select the game you would like to play.
- Enjoy.