I completed my integration project with Silverlight 1.0 and SharePoint 2007 - which doesn't requiry any configuration on your server, except to install my Web Part with the .wsp solution.
But...
Instead of giving you a nice guide on how to implement and integrate Silverlight, Microsoft gave me a Bluescreen of Death smacked in my face when I was copying my files to the source control environment.
Anyhow, it's not such a big loss. I think most of the things are checked into the Source Control environment already, so i just need to set up a new VPC - seeing as this one doesn't even start anymore :S
Hang in there a few days and you'll have your Silverlight 1.0 integration served on a Silverplate!
Keep in touch.