mkdir gccg cd gccg wget http://gccg.sourceforge.net/modules/gccg-core-0.7.23.tgz tar xzf gccg-core-0.7.23.tgz
You will now have the GCCG installed in C:\Cygwin\home\[username]\gccg\ (by default) and you can run it as you normally would (Mtg.bat for MtG etc.). Later, when you want to update your client, apply ./gccg_package update. Note: You may need to do chmod a+x * again if windows binary package windows32 is updated. See "Common Problems".