After reading the post on a Gen7 booting win3.1, I thought I would give it a shot on a Gen6.
DosBox has serious RAM implications on Gen6 hardware, so I opted to install the windows files from my PC and transfer them over to the Archos 5 IMT.
The Result?
The process was very similar to the post listed below:
I installed DosBox on my PC. copied the Win3.1 files from the ISO, ran DosBox and mounted the folder where the Win3.1 files reside. I then created another folder called Windows, and mounted that to a separate drive letter in DosBox. I then ran the setup, and went through the installation process, installing the OS to the “Windows” directory I created/mounted.
Once finished, I transferred the new “Windows” directory over to my unit,, booted up angstrom and ran DosBox.
I then mounted the “Windows” directory to “C:”, then cd’d into it and ran “win.com”.
Success. 
Cheers
~Spz0