The executables (at lest the RKnot Builder V3.0.1.21.exe) is a self-extracting 7z archive, containing the following files:
RKnot Builder.resources.dll
RKnot Builder.resources.dll
RKnot Builder.resources.dll
RKnot Builder.resources.dll
RKnot Builder.resources.dll
RKnot Builder.resources.dll
RKnot Builder.resources.dll
Enregister-sa-licenceRKB_3-11Jan.pdf
Registering-RKB-V-2 Jan-11 .pdf
REGULAR KNOTS BUILDER-V3-11Jan.pdf
RKBuilder-Trucs-et-Astuces-Utilisateur-V3-11jan.pdf
RKnot Builder Registering-EN.pdf
RKnot Builder Registering-FR.pdf
RKnot Builder V3.pdf
RKnot Builder-EN.pdf
RKnot Builder-FR.pdf
RKnot Builder.exe
FonctionDiversC.dll
That's it there is just no images there.
7z is also capable to unpack some other exefiles that is not ment to be extracted, so the exe file RKnot Builder.exe does contains the following files that may be possible to extract:
.rsrc
GROUP_ICON
32512
ICON
2.ico
version.txt
.text
.sdata
.reloc
No images at all. That doesn't mean that there isn't images stored inside the exe file somehow, but at leat it cannot be extracted, or is protected somehow to be extracted. I have never run that particular program, so the image (if graphic and not a real photograph) may be assembled by a bounch of standard win-elements to make it look like an image.
If the images is that important, I suggest you run the program on your computer (with guest rights) and then take screenshot of it.