latest post iframe/embed for extern site

Hi everyone.

Im looking for the possibility to embed/iframe the latest post from a blog on another site than the blog its posted on..

To be more specific. I want a external side thats shows the lates posts from 3 different blogs on its inex page. Havent been able to find a plugin for this..

Anyone knows of any way to do this?
Its probably out there somewhere.. Ore Ill have to try and tweek it myself

Cheers,
Mads