adding words to language?

[wm2485#AC]

On my g2 you can add words to your user dictionary. You got to settings/language & keyboard/user dictionary, and you can add from there. Now I cant figure out for the life of me how to do it on my Vibrant or if its even possible. Please help this would be very handy because I use swype the most on the Vibrant. To be honest... I got my G2 before I got my Vibrant, and now that I've started getting used to swype, I find myself using the G2s physical keyboard less and less. So basically question is... How do you add words to your user dictionary in a Vibrant running stock 2.1?