Hi all... This is the scenario that I need help by c# 2005: There is a button in my web form, the user will press this button then it will do some action on the client machine. Like working his/her antivirus to scan the client machine (if the server side button is scan), or use his/her scanner to scan and save (if the server side button is use scanner). I need some examples or from where I can begin searching?!! I just need to let the user press the activeX in client machine browser to let me do some action that the user accepted to do it in his/her machine. And there is another something: is it deferent if the browser is IE or mozilla or any kind else? Thanks for helping...