The original or the sequel? If it is the original, you should just get Rock Band 2 and rent or buy the original used at GameStop and just import the songs for $5. You only lose 3 songs (Paranoid by Black Sabbath, Run to the Hills by Iron Maiden, Enter Sandman by Metallica), but gain a wealth of songs and better features in the process. This is of course if a) you own a 360 or PS3 and b) already own some form of instruments.