I don't understand your reply, could you be more specified? I mean, in 9 or 7 versions of Informix, (not in Windows installations), you could find a file in Informix/etc/ named .snfile, where you could see all the Informix products installed.
I would like to know if:
a) If this file exists in 10 version.
b) If not, if there is a file like this in 10 version.