VS Setup Project

Question

I'm creating a new Setup project for the first time, and I have a couple of questions I'd appreciate help on: 1. How do I specify that I want the setup to always overwrite or uninstall any previous version of my app. That is, I don't want to require the user to have to uninstall and then re-install when I provide updates. I noticed that the "Project/Install" menu action in Visual Studio does this very nicely, but when I test my msi file directly it prompts the user to uninstall first and then re-enter the install. 2. Not really a Setup question, but if I target version 1.1 of the framework, will this likely work on the upcoming release version of 1.2? I know that apps developed with VS 2002 work this way - they automatically are work with both version 1.0 and version 1.1 of the framework. Once I get this install the way I want it - I don't want to have to do separate installs for 1.1 and 1.2.