This is called integration. (Setup.cab + Setup.ini into Setup.exe and Setup.dll (Autorun.exe))
1. Delete ";" in the front of:
;#define Internal. Do it for
InstallerScript.iss and
LangScript.iss;
2. Put your
Setup.cab content in a blank folder called
Setup.
3. Compile
InstallerScript.iss and
LangScript.iss;
4. Congratulations! You create integration.