Learning vim is like learning Kung Fu, you practice the same awkward route motions until they're so natural that you don't even notice you're doing them. Sadly, it's not a quick process, but it's worth it.
C-a, C-e, C-n, C-p, C-k, C-y (kill yank not quite the same)
Edit: C-f and C-b too
Edit 2: Just checked and word is not one of these programs :(
http://emacsblog.org/2007/02/18/emacs-key-bindings-in-ms-wor...