dID yOU eVER tYPE sOMETHING lIKE tHIS iN wOrd? then found that you had to delete it all and re-type it using the proper case. In Word you can highlight the text and press SHIFT and F3, it will cycle between lower case with a capitalised first letter, upper case and lower case.

Did you ever type something like this in word?

DID YOU EVER TYPE SOMETHING LIKE THIS IN WORD?

did you ever type something like this in word?

This also seems to work in Powerpoint and in the body section of composing an email in Outlook 2007.