I got a Nikon D3100 for Christmas with a 200mm lens, and now I have a few questions. Thanks for your help in advance. I have PS CS3, but it wont recognize .NEF files (Nikon RAW files.) Is there a fix for this? If the above issue cannot be fixed, I am looking for alternative RAW editors. I have a lot of leftover cash in my iTunes account, so I would prefer it to be from the MAS. I'm leaning towards Pixelmator. Thoughts? This might be a dumb question, but what is the difference between the 3 different AF modes (AF-A, AF-S, and AF-C)? Both of my lenses have VR. I do tend to shake the camera when I take a pic without a tripod, so I assume I should leave it on, but what if I DO use a tripod? When I tried shooting in P or one of the other manual modes, the shutter speed would sometimes be very long and everything would blur. This doesnt happen in Auto obviously, but is there a general tip to fix this problem, or should I just stick to Auto? I'm pretty sure i have more questions, but I will ask them later when I recall them. Again, thanks for your help.