Dynamic border/stroke with AS

I have read like a bajillion places people wanting to do the same thing, but you can not with just graphics and symbols. Every keeps saying to do it with AS, but then no one tells you how, so I am asking. How do I create a shape, any shape and then apply a border/stroke to it that has a fixed width, and then i can scale that shape say like a square, into a rectangle and make it huge.

And please don’t tell me to use hairline, I want a think fat border.

Basically I want to be able to do in flash what this guy has in html.

www.omegapage.com. I want those boxes!!!

Thanks for your help.

Tazz