binwalk -e cc32d48.exe
cd _cc32d48.exe.extracted
unshieldv3 extract comm.z comm
python extract_images.py --ico --png -d ns/ ~/Downloads/Netscape/_cc32d48.exe.extracted/comm/program/*.dll --continue-on-errors
where `extract_images.py` is from my https://github.com/akx/res-extract project (once upon a time someone needed the Excel 95 icons, and I obliged).However, they're just 32x32 frames, not the glorious 60x60 from the article: