wow thanks for all the great replies.
-wannabe, I took a look at the pro v1 software, its nice but it doesnt have all the features I want free but I definitely have alot of the same features. Ive also have lessons where they analyze my swing, therefore I know what to look for. I want to build this system for practicing what I'm trying to fix from the lesson, its not a lesson replacement.
-mkrolewski, I wont have a problem slowing down the video since my software is doing all that for me. My idea is to have two cameras one for the front view and one for the side, the software is going to have it side by side and i'll be able to view it however fast I want it, ie frame by frame or every .1 of a second ect.
My software I am programming isnt the biggest concern, its finding a decent camera/webcam that has a USB passthrough, which means that it can be recognized by the computer through either firewire plug or usb plug, and the computer could then use it as a web cam. Also I wanted to keep cost as low as possible. So my guess is I am looking for a camera with atleast 320x240 recording with min 60fps, however i dont think webcams have shutter speeds. I am guessing I might need a digital camera.