Hi, Safequip!
I agree with oldchippy, you don't have a straight way to do it with formulas as you can't foresee all the conditions to change and to exclude from changing, so depending on the no. of records of your actual file I'll suggest you 2 methods:
a) If the number is little, use PROPER formula, then copy & paste values over the original ones; later adjust them manually as required.
b) If the number isn't litte, use UPPER formula.
Regards!