Well there are other wayz, but the same cost is involved so you either need a cheat device or Swap Magic Original, you then a PS1 game, Why, becuase when a PS1 game is put into the PS2 it goes to the memory card and looks for a file called TITlE.db if it finds it, it will either load the programz/elf files on it. Then you need an elf called Bios Dump, install that and it will transfer the files to your computer, the reason you can't just download it is that Sony would have a lawsuit on the site.
Note: The bios is usally used to play a PS2 emulator
TheLegace