How can I reset auto-complete dictionary for my Sony Ericsson Xperia mini pro?

The stock soft keyboard on Sony Ericsson Xperia mini pro has a feature called 'Learn words' (Settings > Language & keyboard > International Keyboard > Text input settings > Learn words) that learns from user input and adds them to the autocorrect dictionary. Over time however this has resulted in many misspelled words also being added to my autocorrect suggestions. I want to start this over from a fresh canvas. So how do I reset my autocorrect dictionary? When I go to Language & keyboard > User dictionary so I'm guessing Sony Ericsson uses its own keyboard replacement with its own user dictionary store.