I have noticed sites that have some text with dotted underlines. How do you do this?

its a css tag.

CSS:

a {
text-decoration: none;
border-bottom: 1px dotted #000;
}

if u use the above all links will have the dotted line

if you use the one below, only on mouseover they wil have it

a {
text-decoration: none;
}
a:hover {
border-bottom: 1px dotted #000;
}

Thats all ok, thanks for clearing this up for me.

Another question. how do you apply the dotted unerline to text that is not a link?

just assign a id or a class and apply the same to that text

Or simply use an img of dots... lol

Thanks again.