>My application (distributed as an .exe) works great on most machines, However there is an XP machine which prints on letter size paper instead of a custom sized(halfletter). Other Xp machines work OK. What do I need to do? I have set up the page size in Printer server properties and in Report designer use Pageset up to select the printer and page size.

Try to lear printer related info from the report. Open your report as a table and blank out TAG and TAG2 fields in the first record. Also remove following printer related lines from EXPR field.

DRIVER=
DEVICE=
OUTPUT=

In VFP8 you can just uncheck 'Printer Environment' on Report menu and save report.