http://www.ifixit.com/Guide/Removing+Dell+OptiPlex+GX260+Hard+Drive/4004/1
http://www.ifixit.com/Guide/Removing+the+Dell+OptiPlex+GX260+RAM/4001/1
http://www.ifixit.com/Guide/Dell+OptiPlex+GX260+Power+Supply/4005/1
http://www.ifixit.com/Guide/Removing+the+Dell+OptiPlex+GX2600+Optical+Drive/4003/1
Feed back would be appreciated.