Hi fleetfoot - by default Windows will prevent modifications to stuff under c:\Program Files (x86) - but if you're using Windows explorer to copy the files it should pop up a message allowing you to authorize the file copy right then.

If you're trying to directly unzip them right into that folder then that may be a bit more difficult since the unzip program probably won't do a dynamic privileges elevation like windows explorer will.

So to solve that, unzip to a temporary location elsewhere like to your desktop and then use explorer to copy the files over, or right-click your unzip program when you launch it and choose "Run as Administrator" to give it elevated privileges - a program that is running with elevated privileges is not prevented from modifying files.

- Michael