Silverlight and corporate designs

in near future want / design intranet application, should based on silverlight (version 4). there prerequisite, application should use corporate design of company. corporate design quite complex. templates (html / javascript) exist, there no enforcement use them. no problem realize design otherwise (for example asp.net masterpages)

for me main question is, how should start !? should write complete silverlight application or better mix asp.net. @ moment have no idea how realize corporate design silverlight. on other side think asp.net masterpages feasible. when mix asp.net, project type in visual studio should select ? or makes sense use 2 projects (asp.net , silverlight) inside solution ?

i know, there silverlight navigation framework, have no experiences , not sure, if alternative asp.net masterpages.

and last question: has experiences silverlight , company corporate designs ?

thanks in advance hints , !

let me address last question first,  designing anything in silverlight frankly have have alot of practice

so advice take piece piece etc there  is not easy solution that problem takes practice

 

silverlight  uses ajax or jquery   so if familar using asp.net ajax web application way  ahead of game

rob bagby has number of posts on , their are tutorials on using ajax asp.net web site

partial page update asynchronous etc   

silverlight 4 uses the wcf restful starter kit(not ready silverlight 3 or vs 2008)    

i advice learn using wcf restful starter kit

and usintg ado.net data services  entity framework including using poco(which in beta mode now)  

that started......

Silverlight  >  Designing with Silverlight