you can back up your itunes library to cd/dvd, which i would strongly reccomend anyway as you have so many songs. Once you have them on disc just insert it (them) in to your pc & itunes will automatically ask you if you want to import the library. You can copy your my music folder to disc also & just relpace the my music folder on your new pc with it, although personally I would set up the old hard drive as a slave on the new pc & copy files across from that.