/ cant open canon RAW photos
Raw files need processing first. Someone more knowledge will be along soon.
You will need the latest update of Cameraraw from Adobe, which should now include the 1100D.
You definitely have a much wider range of options working with a RAW to begin with - if and when you do manage to open up a RAW file using DPP compare what you can do with that using the first (RAW) editing box on the right hand side of the page compared to what you can do with the second (JPEG) only. Play around with the sliders and so on. I find it particularly useful for making subtle (and sometimes not so subtle) shifts in the white balance.
Having said that, shooting in raw has many benefits and is essential if you want to make the most of your photographs even with minimal editing. Best of luck!
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