The answer doesn't change, because I can't tell you what Word would recognise your printer bins as - that all depends on how your printer is configured. The only other option you've got is to manually print the first page of each section to the letterhead bin, which you'd do by inputting specs like:
p1s1, p1s2, p1s3, p1s4, p1s5 …
to get all the first pages, then manually print the other pages of each section to the non-letterhead bin, which you'd do by inputting specs like
p2-3s1, p2-3s2, p2-4s3, p2-3s4, p2-3s5 …

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]