*NOTE* MyRpt is generic for your instance of the CR report you wish to print from.
To set CR to print to the tray that is the printer default you do this:
MyRpt.PaperSource = Printer.PaperBin
*NOTE* Printer.PaperBin is usually 7 (Auto Select) by default.
You can also set papersource to the following properties (a full list is at the bottom): Auto Select = 7 (or) crPRBinAuto Upper Tray = 1 (or) crPRBinUpper Lower Tray = 2 (or) crPRBinLower Middle Tray = 3 (or) crPRBinMiddle Manual Feed = 4 (or) crPRBinManual
An example to print to the middle tray would be: MyRpt.PaperSource = 3 -or- MyRpt.PaperSource = crPRBinMiddle
The following is very important! "If the SelectPrinter method of the Report object is being used to change the printer for the report, the 'PaperOrientation' and 'PaperSource' properties must be set after invoking the SelectPrinter method. If the 'PaperOrientation' or 'PaperSource' property is set before the SelectPrinter method, then paper tray or orientation settings are overwritten with the new printer's settings."