I'm hoping that someone just knows this, because I can find it in the Visual Installer's documentation. I want to know what the command line switches are for installing a .msi project. I was able to find the switchs for the loader (by call the loader exe and then /?) but I haven't had the same luck with project files that I create. Basically, what I want to do is provide and automatic updating feature in my program. I have already written all the code that checks my server, downloads the new .msi package into a temp folder, and now I need to install, and since a .msi installation is cache, so that it can repair itself, I need to go through the following steps to install my new package:

1) Remove the previous version
2) Install the new version

Ideally, I would like this to be quietly and automatically. What I would like is for the user to only see the second step, which would only include two dialog boxes, one that says it is updating, and one that says it is finished.

Can anyone help?