Tim Aidlin, Design Evangelist at Microsoft did some work for us customizing our Office Live demo site called Northwind Inn, which was built by my co-worker Rohit Puri - Rohit, you need a blog I can link to!

He did almost all of the customization using the Site Designer and Page Editor tools that come with your Office Live account.   Tim wrote up a nice little post about what he did to customize the site.  Thanks Tim!