You seem to be somewhat confused. To keep it as simple as possible, when you normally install an application you click for example "Next", "Next", mark a few checkboxes, et cetera and click "Finish". You can automate this process using AutoIT, that's all. If you would automate an installation using AutoIT and you would like to have a silent installer, you would still need to package your application. But please note that you hardly need to use AutoIT for automating any installations. Most applications allow command line parameters to configure their installation, so instead of automating the installation using AutoIT, you could simply run the installation like this for example: setup.exe /silent /components:main (this is of course just an example which I made up myself). You can then create self-extracting, silent installer packages using for example 7ZIP or WinRAR which automatically launches the installation with the required parameters. I personally need to use AutoIT for only two applications: DNL Reader and GMail Drive (and perhaps even those could have been via other means, but I haven't found out how anyway ). For all my other applications I created my own self-extracting, silent installer packages. All applications which can be installed via SVCPACK are installed via SVCPACK. Applications which cannot be installed via SVCPACK are installed via RunOnceEx, straight from DVD. thanks again mate , but i think that autoit is better when it comes to registering the softwares , the silent switches save time only for the installation process but they don't provide us with a possibility to reduce that time spent entering the registration keys and settings,(as i know) alos the autoit script aren't much complex they are quite easy to make, the question now is whether it's possible to make an n-lite addons using autoit exes? thank you in advance folks