My aunt has an iMac DV SE (Graphite with DVD FireWire etc), well her old hard drive is still chugging along but, she wants more space. She got a 120gb Seagate ATA drive, now my question is...should I put it internal? Or external? I think it would be nice internally so she'd have an open FireWire port but here is what I'm thinking. Would FireWire be faster? Also will the iMac be able to handle the heat? I don't want this thing to get hotter than it should. The other option is to get an external case and she can just use the new drive to add new files to while still using the original 13gb drive for Mac OS X and her exisiting files. I'd like to put the hard drive internally but, I'm worried about the heat issues, also I'm not sure how fast the iMac's ATA bus is. Could FireWire be truly faster? Thanks!