how do u put a scroll on ur page so ur page doesnt stretch out?

The browser automaticly puts a scroll bar on the page if the page is it has too. The page won't "stretch out".

this is my site right here http://www.freewebs.com/glamorous_graphics/ and if u go to the hilary duff blends then the middle of the page stretches out

It's because the images are larger than their container. Just make the container larger.