There is nothing wrong with it, it will just take some time getting used to it.  To start with, I read a few posts:

• http://russelleast.wordpress.com/2008/08/09/overview-of-the-modelview-viewmodel-mvvm-pattern-and-data-binding/
• http://wildermuth.com/2009/02/21/My_Silverlight_MVVM_Article_is_Live! and the associated MSDN Magazine article.
• http://blogs.conchango.com/davidwynne/archive/2008/12/15/silverlight-and-the-view-viewmodel-pattern.aspx
• http://msdn.microsoft.com/en-us/magazine/dd419663.aspx

 None of them really talked about a complicated system with a main page user control and several child usercontrols. So I am working through that currently.

I will post more information when I understand better.

I have been working on learning Silverlight 2.0 for the past couple of weeks, and I think it would be wise to start writing down some of my experiences so other can gain.

I will be updating this with real life usage issues that I come along, as I have found the existing learning experiences sometimes lacking.