Textmate alt-f to move forward by one word

I've recently switched from Linux to Mac. One thing that is really killing my emacs memory muscles right now is the lack of alt+f and alt+b to jump forward and backward by word. I've gotten the meta/option flag flipped in Terminal.app preferences (so alt+. now works as expected), but I haven't found a similar option for Textmate. Even better if I could enable it as a MacOS global setting for the U.S. keyboard (so it would work in all input boxes). At the moment I get the following useless (for me) encodings: alt+f: ƒ alt+b: ∫ How do I remap alt+f and alt+b to jump forward and backward by word?