Client for multiple blogs?

So I've been trying to find a client (low cost or free) that will allow me to write a post, click a button, and have it post to multiple blogs. I downloaded the free trial of Ecto, but couldn't get it to work at all, and I tried MulitBlog and that didn't work either. Any of the others I've looked at don't have the features I need (like supporting LJ & Blogger)... Anyone out there have any good ideas?