Controlling ASP.NET Client ID

http://www.4guysfromrolla.com/articles/031710-1.aspx

How to Directly Print a Crystal Reports to Default Client Printer from ASP.NET without Preview or Printer Dialog

http://www.neodynamic.com/articles/How-to-Directly-Print-Crystal-Reports-to-Default-Client-Printer-from-ASP-NET-without-Preview-or-Printer-Dialog/