http://download.comodo.com/cis/download/installs/1000/standalone/cispro_1year_installer.exe
This one is for both 32 and 64 OS - 60 Mbfor those who want 32 or 64 installer can usehttp://www.comodo.com/home/download/download.php?prod=cis-pro- this installer is smaller - 35 or 37 Mb respectively