How do i enter the unlock code on a Samsung Galaxy Europa if the keypad doesn't appear?

[AC Question]

I have a Samsung Galaxy Europa that i want to unlock. The problem is that i a can't access the keypad to type in the unlock code! There is just the box for the code with two buttons underneath one labelled 'Continue' and the other labelled, 'Dismiss'. I have an unaccepted SIM card installed etc.