Universal Extractor is a program do to exactly what it says: extract files from any type of archive, whether it's a simple zip file, an installation program, or even a Windows Installer (.msi) package.
This tools homepage is at "http://www.legroom.net/software/uniextract", and I found it by looking through the "Unattended Windows MSFN Forum". This tool is an "AUTOIT.EXE" application which may give you some idea what "AutoIt" is capable of.
The following shows the minimalistic GUI when invoked via installed shortcuts:
The following shows the how I normally invoke the product: