A couple months ago I opened up my 20" iMac G5 iSight and replaced the "Superdrive" and the hard disk. While I was in there I completely forgot to change the PRAM battery. It really wasn't too bad digging around inside but I was wondering if anyone has a photo or remembers where the PRAM battery is located in this model? I don't remember seeing it when I was changing the other components. Thanks in advance!