To get your top 200 customers
choose 6,1,6 - select $1 and up,
choose yes to fine tune.
select the 01/01/2006 to 10/05/2006
and, possibly, a major code range
(to filter in or out repairs, or loose stones etc) then
choose Yes to recalculate.
Choose Start purchases report.
Find #200 on the list and see that she bought, say $934.
Then run the report again with $1 to $934 on line 6 - that should
give you the Top 200.
Starting with Shopkeeper Version 9.8 you can more directly ask
for the Top 200 from the 6,1 screen.