How silverlight works-Collection of common programming errors

Hello,

 I’m developing ASP.NET websites and I’m new to silverlight…
I have a few question on how Silverlight works that I can’t realize..

1. In asp.net you have a server and a client, so the client gets the generated html from the server (after codebehind has been executed). Also you can use AJAX to send and get data. How does Silverlight 1.1 works (on the client or on the server) ??

2. f.e I create a xaml file with event that is executed with c#, the compilted dll is placed on server. Silverlight downloads the dll or just send an request for specific function and the functions gives a reply?

3. Do silverlight has access to dll that is placed on the server?

4. What is the interaction between client and server ?? f.e. I have a database that has access only on localhost and i run sql query in c# on specific event, then I want to fill a textbox the the results.

5. What components does the client need to have in order to run Silverlight site (Except silverlight 1.1) ?

Thanks,
Alex Vr