Since a Silverlight application runs in the client´s browser you can use an Apache HTTP Server to deliver your application to the client. You can test it by yourself in a few minutes:

Get a free copy of Xampp Lite, consisting the Apache HTTP web server as well as some other software like MySQL.

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Download the zip file and extract it to any folder you want. After that run the "setup_xampp.bat" in order to set some absolute paths to the install directory. Now you can run the „xampp-control.exe“ where you can start your web server.

Note: If you have the Internet Information Services installed you first have to stop the „World Wide Web Publishing Service".

Now you can deploy your silverlight application to the“ xampp\htdocs“ folder like in the picture shown below:

After that you can browse the folder using „http://localhost/silverlight“:

Note: If the Url is not working try „http://127.0.0.1/silverlight“. After opening the „TestPage.html“ Silverlight is running in your clients browser.