Multiple Archive Files

Is there a way to act on any other archive besides the exe of the installer. For example, if I was to make an installer to download optional packages from the web, how could I extract files from these archives from within NSIS???

From what I understand, it is not possible for NSIS to extract files from anytype of archive. It would be wise just to create exe files from the .zip file to using Zip2EXE. Just make sure that you put in the nsisconf.nsi in the NSIS base dir the following:

DirShow hide

InstallDir $EXEDIR

-Duane