On the other hand, though, you can simply launch iTunes on your new iMac, hit command-O (Add to Library), direct the dialog box to the appropriate folder on your (FireWire cabled) old iMac, and let iTunes do the rest. (This may not be the fastest import method, so it may pay you to wait for further input.)
It's actually even easier than that. Open the old iTunes library, do a Select All, and drag all the files into the new iTunes window.
