Following the hint on viewtopic.php?f=82&t=48583 I made the following sample script, saved it as /usr/local/bin/irfan64 at and made it executable:
The script starts the .exe correctly from the command line.#!/bin/bash
wine /media/...(path).../i_view64.exe
/usr/local/bin/irfan64 can be added to the "Open with ..." configuration list but nothing happens if this entry is selected within "Open with ..." on an image.