nsisunz is a NSIS plugin which allows you to extract files from ZIP archives.
nsisunz is great when you use another NSIS plug-in named NSISdl to download a ZIP file from the internet. Download a small installer which lets the user choose the components he/she want to install and the installer downloads it (QuickTime Setup does this).
nsisunz is written by Saivert. Homepage: http://members.tripod.com/files_saivert/