Help( can comodo be installed or not on vista 7)?

I was told to come here to find what i need to install the free program from comodo for security on my laptop that has vista 7 and now i do not see anything to help install that program can it be installed or not why offer something if you can not install it they should say so instead of going threw this mess . Delbert

Edit by EricJH: reverted all caps to sentence case

Vista or Win7 32 or 64 bit CIS installs on all those, so what ‘mess’ are you talking about?

Just download the installer and install it in the usual manner.