Thanks alot for all of the help. I will definately look into the regulators then. Hopefully I can find them for what I need. I have to look intot he servos because I know some of the smaller ones only run off 4.8V but some of the larger ones run up to 6V. So for the arduino I shouldn't need to step down the voltage as there is an onboard regulator? So I can just attach the 6V battery directly to it? If not that is fine as I still need a 5V reg for the controller I am going to build.
Also, I was planning on tearing apart a couple of old laser pointers I had to do something with. I dont have specs but they run off 2 AAA batteries which in series is about 3V so would the pin that operates at 3.3V from the arduino work for these or would I need a 3V reg from the battery directly too them with a electronic relay connected to the arduino to control any on/off commands.