Is there someway to change view from different cameras? Like you have 2, one is side and front…how/can you change which one you view through?
Just Hit Ctrl-Numbpad 0 with the camera you want to view through selected . That will assign which camera becomes the viewing camera . In fact you can make anything in Blender the active camera by selecting it and hitting Ctrl-Numbpad 0, though you wont get the camera properties with a non camera object .
Ctrl-Num0 will change put the camera view at whatever object is active:
http://wiki.blender.org/index.php/Manual/Camera_View
To change cameras during an animation, try this:
http://blenderartists.org/forum/showthread.php?t=68341