IOUpdate - Version 1.00 I think, the automatical updating of your applications on user's PC is good idea. Also, sometimes you do not want to add some big files in your installation projects. For example you need to install the MDAC (Microsoft Data Access Components) before using a MS Access databases in your applications. But the MDAC installation program is very big (about 7.5 Mb) and is no necessity to install it on the Windows XP. You can use IOUpdate.dll for it.The IOUpdate.dll uses Microsoft's Component Object Model (COM) technology to provide access to updating services such as:Comparing a current version of your application with newest updates on your FTP and ask user for updating. Return to previous version in any time if user wants it. Downloading and installing additional files or utilitys from your application.