How To Set Default Printer in Silverlight?

Question

I want to select printer in Silverlight program, just like ATM or POS that will automatically print without selecting printer.

I browse internet and found: http://bytes.com/topic/c-sharp/answers/255914-set-default-printer-machine, it says that using System.Management package, using ManagementObject and ManagementBaseObject class, but I cannot add/import the class.

How to add using System.Management in Silverlight, or is any other way to selectt printer in silverlight code?

Regards, Imam