Had a chance to replace inner HD of iMac-24" (2.93GHz). The site was quite helpful.
1. Font glass panel removal (vacuum lifter mini; 2 sets in one --- short suction period)
http://thumbnail.image.rakuten.co.jp/s/?@0_mall/smile-hg/cabinet/00161232/img55595836.jpghttp://item.rakuten.co.jp/smile-hg/056033/#0560332. LCD removal
3. HD replacement
No need to disassemble anything else for the hard drive.
Damaged 650GB drive was Hitachi-Global (Mar. 2009) with Apple Logo on it.
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