In this HD video (shot on my iPhone 4!), I explain the somewhat tricky process of taking apart my 24" iMac (2.8, 2008 model) to replace the internal hard drive. Please see my website (linked above) for more details and faq's. This procedure should work similarly on other aluminum iMacs with glass fronts (although I'm a little leery of doing this on the 27" iMac!).