To find out the installer and generally the switch's used for it please refer to the following link:
Linky**UpDate**
Just looked at the file its a SFX rar file, that then seems to extract its self and run a setup file that more or less moves the files where they need to be and makes the shortcuts and reg entrys as needed. The actuall setup executable doesn't seem to have any known silent switches.
So to that end...I'd have to say make an AutoIt script to install it. You can find a number of sample scripts and links at the following links:
Linky #1Linky #2