HP LaserJet 1300 Manual Feed Problem

Archived from groups: comp.periphs.printers (More info?)

I recently converted from WordPerfect 8 to WordPerfect 11. For years
I have been sending out letters on a monthly basis where the first
page of the file is the letter itself and the second page of the file
is the envelope. When I was using WP8, my HP LJ 1300 would print the
letter from the main tray and the envelope from the manual feed tray.
Now that I've converted to WP11, both pages print from the main tray,
which has really created a problem. Any ideas on how to fix this? I
already downloaded and installed the latest printer drivers; this had
no effect. (I also posted this question on the WordPerfect11 newsgroup.)