Before you move anything, you need to consolidate the library (File-Library-Consolidate Library). THEN you need to move your iTunes folder to the other drive, including the iTunes Library.itl and .xml files. THEN go to your options menu, and repoint your iTunes to look at the new folder (i.e. Where is your iTunes folder located). Then it should start to import the songs back into iTunes. i just did this on Sunday. let me know if you have more questions