I guess what I was trying to say is that to do what you suggest your "build" process does not have to include a step that manually runs CVTRES because LINK will do it.

VB6 doesn't need it because VB6.EXE Make does the CVTRES operation itself.

So LINK needs to be able to find CVTRES, but only when fed a .RES file.

CVTRES would be part of the VC6 toolchain and install with VC6, but it might also be found elsewhere on the VS6 or MSDN Library CDs.