Creating standalone atlas installer with 7-zip module

The basic idea behind this is quite simple. It's a 3-step process:

1. Collect all files and scripts necessary to perform a specific task and zip then up with 7-zip.
   - using the 7-zip command-line the command is:
   7za.exe a -mx5 atlas.zip
   
2. Create a config file (config.txt) that specifies the behaviour of the installer.
   
3. Concatenate the zip-file, config file and 7-zip SFX-module with a binary copy
   copy /b 7zS.sfx + config.txt + atlas.7z

The resources needed (7za.exe and 7zS.sfx) can be downloaded from the internet. Link to guide:
http://www.msfn.org/board/How-to-make-a-7-Zip-Switchless-Installer-t39048.html