Wow,
I've just read through this post with interest, and to be honest I am dumbstruck by some of the answers to a relatively simple question, the op didn't ask for a user manual on how to use iphoto, they just asked how they could get access to their photos!
How is ridiculing their knowledge of the app, and keep on telling people they don't know how to use their mac of any use? being a pompous *** and completely anal helps no one...
For myself I have an imac and a pc, and I want to back photos up to my drop box, it would be far easier for me to just grab the files and copy/paste them across the network, or onto my external drive, and for most files on my mac thats relatively straightforward, with photos its a pain in the ***!.
My two penneth would be to read what the person is asking for in their post, and look at the simplest way of doing it, and the only real answer to that simple question came from Doug, as he told the op where the pics were stored.