Installer (zip based) - how to clean the destination folder

Hi

I normally create my application with NSIS - Installer based on a ZIP file. But it just override the files on the destination folder.

There's a simple way of create a installation that delete the old files before transfer the new ones?


P.S. The only programming I know is Autolisp, but if there is some easy tutorial about creating installers, I think I can do this.

Start with Example1.nsi