I\'ve been googling around trying to figure out if it\'s possible to use my mouse wheel to scroll while inside Vim in Mac\'s Terminal, with no luck. It seems as if only X11
You can read this article, but I'm pretty sure since the default terminal in Mac OS X has a built-in scrollbar, the mousewheel commands automatically go to it. You could definitely use gVim as suggested in the previous answer. I find that I don't generally want to use the mouse in Vim though as it takes my hands off the keyboard.
I just use 50j to go down and 50k to go up. Not exactly scrolling, but it works pretty well.