If you dont already have a 939 chip then AM2 chips and Mother boards are cheaper.
If don't have a PCU at all I would recommoned any 690G chipset. They are have very good onbaord video and you will not need to get a video card every if you dont game much.
For Intel I would for any 965 wiht on baord graphics. Not as good graphics but you really dont need better.
Almost any brand is good as long as it has the features you want. You dont seem like you will be OC so they all work fine.