You can go to your C:Program files and look in there.
If it’s in Program Files on a x64 platform you have CIS x64 installed.
If it’s in Program Files (x86) then you have CIS x32 installed.
Hope this sorts it for you.
Is it possible to install the x32 version on an x64 system?
This setup does not support 64-bit. Please visit www.comodo.com to download 64-bit compatible setup.
This setup does not support 32-bit. Please visit www.comodo.com to download 32-bit compatible setup.
Copied from the installer language file.