I have PS2 version of Guitar Hero 1 and Guitar Hero 2, as my PS3 is not compatible with the PS2 (slim 120gb), and I love songs from the GH1/2, I am asking you for the following info:

Is possible to import songs from GH1/2 to another higher version of GH / RB on PS3 ? (there may be a problem that original games are ps2 version). Or is there a way to made a custom GH with these songs ?