Earlier version can be found here:
http://download.comodo.com/cis/downl..._Vista_x32.exe
Program Name: Comodo Firewall (or Comodo Internet Security)
Website: Antivirus Firewall Software and SSL Certificate - Internet Security Software from Comodo
Current version: 4.1.150349.920 maybe
Desired versions: 3.14.147648.588 (the last v3.x, I think)
Description: free firewall & antivirus
Earlier version can be found here:
http://download.comodo.com/cis/downl..._Vista_x32.exe