<em><strong>This plugin is no longer available.</strong> Blueprint nowadays ships with a very good 'compress' script that allows you to generate all kinds of nice BluePrint layouts. Having a plugin to just copy some files seems a bit excessive. </em>
I think that, if you're a web developer, you've seen the <ahref="http://code.google.com/p/blueprintcss/">BlueprintCSS</a> framework. BlueprintCSS offers quite a bit of CSS code that allows you to quickly and easily build a grid-based layout, using pure CSS.
That's, of course, all very nice, but you should be able to plug it in into your Rails app. And now you can!