New to animation!
In my short film, I would like to make a cut. In other words, I want to move from a medium shot to a close-up, but not actually capture the movement of the camera. Just have it cut frame to frame.
How would I acheive this with Blender 2.43??
there’s a python script on the blender website for changing cameras. 
I don’t know if it works, but it’s there.
Way #1: at the last frame before the cut, put your cursor is the 3D view with camera selected and press I to insert an IPO curve. then press the right arrow once, move the camera to where you want it, and press I to lock in the new loc-rot.
Way #2: The other way is to use the VSE to cut between two videos. Render out one camera to one file, and the other camera to another file. Load both movies in as strips and K for Kut the videos where you want the cut-over, discarding what you don’t want.
Way #3:The other way is to use two cameras shooting through two renderlayers and use the time node to cut over a mix node to make the cut (see the wiki on Compositing nodes).