Jesse Liberty - Silverlight Geek

Hi Jesse I have had a fair bit of luck with viewing yours and Mike Taulty's silverlight videos on silverlight.net.  I have then taken your teachings and started putting together a responsable Line of Business app (my opinion).  My problem is that my xap file is getting large and what I am wondering is how do I put some of my user controls, which are the forms of the app, into seperate xap file that get called in from my main xap.  I watched the video on dynamic loading assemblies/code but my worry was that Mike in that video just build the UI using code not by having a xaml file.  I have created a seperate project and put some of my user control into it but I still only get the single xap file as output.  I guess in old speak i want to put my usercontrols (once again these are my old school forms) into say a dll file seperate to the main exe.  Boy it would be great if the dll would then only be loaded if I wanted to use them but even if they are not they would be cached so I am not worried about that.  But at least if I change say 1.dll then Main.exe and 2.dll would be cached and the client download time would be small.  thanks in advance Steve