What driver for the i850 are you using?
Are you using the latest Canon driver for the i850?
The latest is version 1.62, this included poster and
booklet printing, if not goto Canon's webpage for Canon
i850 technical support. For ease you can copy and paste
the below address into your webbrowser address bar, it
will take you right their, without having to search
throughout Canon's webpage.
http://www.usa.canon.com/html/conCprDriversTypeSystemV2.js
p?section=10216&t=10001&m=10033&group_id=-
1&type=Software&prodref=PS&subtype=Software&level2catq=All
Cats&modelid=8047&item=8046#windr
The directions are pretty straight forward on the
installation of the new driver, and will not as you
mentioned "detune" anything. Make sure that your install
the right driver for the operating system that you're
using, on the Canon webpage "Windows XP" is the first
file under Windows Drivers, called "i850_XP_v162c.exe."
-----Original Message-----
Hi Bob thanks for the info on poster printing. I
followed your instructions but the fifth line down the
droplist is "banner printing" and not Poster printing.