The instructions were spot on. New battery (from iFixit) is in and everything appears to be working great.
I just wish I read the fridge magnet trick to help catch the screw you know your are going to drop, which I did. After about an hour of hunting for it, I found that bounced to the back of my desk. Thank goodness for hardwood floors or I don't think I'd ever find it.
Wonderful guide. I used it to replace a dead drive in my wife's 24" iMac. Installed a WD Caviar Black 2 TB. I'm jealous because her system now runs faster than mine ;-P.
Here is another reason to DIY this repair, while Apple's labor fee is reasonable, their warranty policy for repairs is not. If you have a new drive installed at the Apple store, your warranty on the drive is only 90 days. Worse yet, the drives are Apple branded, so you can't go to the hard drive manufacturer if the drive fails on day 91.