Here's a brief overview of how to set up the installer tools package.
After downloading the ZIP file, extract it to wherever you'd like it to live that is NOT the same directory as ThinkEssentials. The DLLs, while being named the same, are not cross-compatibile. Each program (Installer Tools and ThinkEssentials) knows which DLL to use, so as long as they're not in the same directory, you won't have problems. Run RemoteBackup.exe (the only supported tool at this time) to use to program. Again, be sure that it's in the same directory as the DLLs that shipped with it.
Installer Tools will run on Windows XP and newer, just like ThinkEssentials. It is a Windows-only program, there is no support for other operating systems. It has no command line parameters.