InfoPath Dev

I realized it was tricky, I guess you might have to set several rules for this and change the formula according to the input in the field. I was capturing first name and last name into same field and then if it was not in the format I wanted, I wanted to convert it into that format.

how do we achieve this "converting first letter of first and last name to capital letters in infopath 2010" in a same field. eg. Mary Jones Thanks :)