Kalvados,
you can use Resource Hacker in an automated way. In fact, this is just what the very popular Transformation Packs like "Vista Transformation Pack", "Vistamizer", and "Flyakite OSX" do to replace images and icons in Windows DLLs.
Vishal Gupta has created a great, yet compact
tutorial about using Resource Hacker. His tutorial includes command line options.
Oh, and you are free to redistribute the ResHacker.exe executable along with your creations. At least this is what the packs and patches mentioned above do.
Hope this helps you,
mynetx
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