Visual Studio Like ErrorList control

Project Description
An error list control much like the one seen in visual studio for use in your own projects.




You can find an online demo here http://www.briankeating.net/errorlist/errorlist.xbap

I'd welcome some help on this project, I'm a relative WPF novice, and I've already made some changes to remove dependencies on 3.5 SP1 but this was done on work time so I can't provide that code.

This code is dependant on .net 3.5sp1 as I've referenced the WPF Toolkit for the datagrid (wpf toolkit requires sp1)