May sound a bit odd this, but you should avoid using capital letters in your CV.
Well there are 2 reasons.
Firstly it is a bit SHOUTY to use capital letters in any kind of electronic communication, and your CV will be seen (certainly in the 1st instance) on a screen.
Secondly, the default setting on Word is to ignore capitalised words when you run spell checker. Many people use capital letters for headings on a CV and we are all so reliant on spell checkers nowadays that any errors are all too easily missed.