在這里只介紹兩種項目的基本概念，一種是InstallScript Project另一種是Basic MSI Project。

通常可以選擇到底用哪種項目可以這么介定：如果項目沒有自定義的對話框而且沒有修改xml配置文件的要求的話，選用Basic MSI Project。反之，如果在項目中需要自定義對話框且需要做對xml等外部文件的修改的時候，選用InstallScript Project。參考文章：http://www.jaron.cn/chs_Others/40/2006-09/101844.shtml（問題一）。

兩種項目的定義如下：

InstallScript Project 在幫助文件是這么解釋的：

The InstallScript installation project type provides the power and flexibility of the InstallScript programming language and the familiarity of the InstallShield Professional project. Windows Installer is not used at all. The installation is completely script driven and very flexible, and it uses the InstallScript engine, the same trusted engine used by InstallShield Professional.

Basic MSI Project在幫助文件是這么解釋的：

Basic MSI is the Windows Installer-based project type in InstallShield. Basic MSI projects are recommended in cases where the Windows Installer service should drive the entire installation. They allow you to author your installation using only the native Windows Installer feature set. The geometry of your end user dialogs as well as the flow of your setup user interface (UI) is authored directly in the MSI package, and the Windows Installer Service uses its native user interface rendering capabilities to display the UI to your end users. The advantages of this project type are fully realized if you need to author your installation in an open format.

在幫助文件還特別對比了兩種項目，有興趣的可以在幫助文件的索引中輸入InstallScript vs. Basic MSI installation projects關鍵字進行查詢。