For Setting Paper Size
MYCRYSTALREPORT crpt = new MYCRYSTALREPORT();
crpt.SetDataSource(SOMEDATASET);
MYCRYSTALREPORT crpt2 = crpt;
crpt.PrintOptions.PrinterName = "PRINTERNAME";
crpt.PrintOptions.PaperSize = crpt2.PrintOptions.PaperSize;
crpt.PrintToPrinter(1,false,0,0);