Code for centering and shrinking comments?

How do you make it so that the myspace comments you write turn out centered and tiny? HTML code, pls and thanks!

Code for centering and shrinking comments?

%26lt;center%26gt;

%26lt;font size=-6%26gt; (any negative size value)

comments

%26lt;/font%26gt;

%26lt;/center%26gt;