Hope these links help,
http://www.koders.com/csharp/fidC4A22C3F3E436EB424B1442D816060C57FC58B0A.aspx?s=typeconverter
http://msdn.microsoft.com/en-us/library/system.drawing.printing.printersettings.aspx#Y0
http://msdn.microsoft.com/en-us/library/system.drawing.printing.printersettings.papersizes.aspx#Y444
[Win32-MFC]
http://support.microsoft.com/kb/167345