I have made bread in a dutch oven.
My oven has a lip around the flat lid to hold coals.
Usually, I just use a small loaf pan and just set it inside the oven.
I generally get about 20-25 or so charcoal pieces hot in a charcoal chimney, put maybe 8 or 9 under the oven and the rest on top.
The more coals you use, the hotter it'll bake of course, and outside air temperature has a lot to do with how many you use.
You just kind of have to experiment a little, but there is a ton of info on the internet.
I've made zucchini bread, regular bread, baked Cornish hens, pork loins, roasts, pork chops, chicken, all kinds of things in it.
If you can do it in a propane oven, you can do it in a dutch oven.
Mine's a Lodge #12 and I use it all summer long.
Here's a site with some good info
http://www.dutchovendude.com/campfire-cooking.shtml