How to run a executable file from a web page?

Question

What I mean is, when user click a button on a webpage, a program which has already installed on his computer would be executed. I also need to pass some command line para

Answer 1

As already said, since SP2, I believe, this is not possible because it is a huge security issue.

However, for our company intranet we had the requirement to create a list of links which started all kinds of applications. I wrote an applet which handles these 'special links' and allows execuables to be started or folders to be opened etc. As this is all under our control we consider the security problem can be ignored.