I had my boy camping at 9 days old. We have a camper with heat and A/C so that makes a big difference. It is actually very easy to camp with young children, no worry about them running off or into traffic.
Bring a pack-n-play for the boy to sleep in and you may have to drive around in the day for his nap since tents get very hot in the day. Also bring his regular blanket and pillow along with a stuffed animal or something so he feels kinda "at home".
When my kids were that age we would bring a big soft blanket to sit on and play and if you have room bring his saucer or bouncy chair. This is also a great thing to get, we actually use it even at home.
http://www.kaplantoys.com/store/tran...ping&WT.srch=1
Obviously bring the stroller for walks around the campground, and then just the regular crap you need. Diapers, clothes, food and formula or milk. If you need to heat up food or formula a small microwave is ideal but not always feasable. But you should have a plan on what to do if you need to heat up bottles. Also bring infant tylenol and if you have a mosquito net for the stroller don't forget that.
Here is a tent my buddy just bought to come camping with us, their boy is about 18 months old. They liked the tent and kept them dry during the rain. It is tall enought to stand up in and not feel cramped. Plus the price is good.
http://www.walmart.com/catalog/produ...uct_id=3657599