How do I change from capital letters to small letters?

I was on the computer one day and my son ran up and started hitting the keyboard and all of a sudden the letters or words and...

How do you make like small letters and underlined letters and any other type of letters. like I know how to make big ones.. <...

In this computer for some reason there are some letters in the internet that appear super super small... Even if I zoom in I ...

How do I change my email from uk to usa. I was given uk but I live in the usa

What do I have to do to change the parental settings on my computer so I can set up another email account? How do I change it?

Can you change your username on youtube?? How?

Can I change my aol screename without signing up for a new screename?

How do you change the size of the pics on bebo to make a skin on bebo?? xx comments

how do you change the color of the font for a myspace bulletinnn???

Ok on myspace right how do you change your display name?? I forgot