Inno Setup Installer is Freeware!
Programs are in a self installing file with Inno Setup.
The install program is provided by Jordan Russell Software. It looks and worked good in our testing. One reason for this change was that is more fitting to distribute freeware programs, using a freeware installer. You will find that when installing, you will be able to choose if you want Start Menu items, Shortcuts on the desktop or on the Quick Launch Bar. You are given more choice on how you want to install. Also the uninstaller allow you to remove programs from your computer, using the windows "Add and Remove Programs".
If you are upgrading from a previous version, make sure that you select your current program folder for installing the new files. The install program will not over write your configuration or log files. However, that being said, it never hurts to save a backup, just to be safe.
Inno Setup - http://www.jrsoftware.org