1-click software release

Question

I am rewriting a vb6 installer into NSIS. One of my priorities is to compile-to-release in the least number of steps possible; ideally, a one click process, in which all needed files are included, registered, and put in the right folders.

At the moment, I am creating several folders. One for app_path files, one for system_files, etc. So, every time that a file is modified or a new file added, I just drop it in the right folder and recompile. However, if a completely new file is included, steps like registering a DLL still need to be implemented in code.

Any suggestion on how to improve this approach?, or on how to design a one-click compile-to-release process?

EDIT:

The original installer was created using the Package and Deployment wizard from Visual Basic 6.0. Every time that I need to release my software, I found my self updating and adding files, updating the respective lst file, and repackaging everything (CAB files, dlls, etc) into one exe in order to release it from our website. It is a cumbersome process.

Additionally, due to pure design. The original software has been copy pasted in several projects, creating several application and its respective VB6 installers (repeating a lot of common files). Ideally, there would be one single installer, which allows the installation of the different executable and manages all the shared files among them.