Do the text-based Zork games support Azerty-keyboards?

No different from the King's Quest games. None, zero, of these old games have support for multiple keyboard layouts.

Ok thanks :-D
Funny you remembered me. I guess you're getting to know me as the Azerty-guy. At least I was sensible enough to ask before purchasing this time round :-p

I have the soution to this.

You need to modify the dosboxZork_single.conf file (for Zork 1, I suppose there are similar files for other dosbox-based games) and add a "keyb be" (belgian keyboard) or "keyb fr" (french keyboard) line so that the file looks like this:

[ipx]
# ipx -- Enable ipx over UDP/IP emulation.

ipx=false

[autoexec]
# Lines in this section will be run at startup.
mount C ".."
c:
cls
cls
keyb be
_zork1.com
cls
exit