Hi.
You can either upload one at a time in seperate posts, like you said.Or you have to have a place to keep them on-line all the time. Like awebsite, or something like PhotoBucket or Yahoo has a photo thing too.some of the people here use things like that.
I am not sure I have explained enough, but I don't know how far you want to go with it, or how technical you are.
Hope it helpes.
Jay