How To Get Printer Path in ASP.NET

I have developed a new system using .NET 2003 . my problem now is, i have create one modules Printing Cheque, on my web page have :-

1) Dropdownlist --> ddlPrinter
2) Button ---> btnPrint

--> when user want to print a cheque, they will choose a printer name that have listing in ddlPrinter. I used this coding to get printer name that connect on server.
 
For Each strPrinter In PrinterSettings.InstalledPrinters
         ddlPrinter.Items.Add(New ListItem(strPrinter))
  Next strPrinter

and it's works.

--> this is my problem, when user clik printer name and click btnPrint,  i don't know how to get printer path that user choose, and make it work.

anybody please help me....