Hi, I am using Avast antivirus, ZoneAlarm, XP Pro, since I have problems with compatibility of ZoneAlarm and Avast I have decided to download Comodo firewall, but I see that in system requirements for installing CPF is Windows XP SP2. I have Pentium 1, and it is already very slow so I gess that I will be not able to install Windows XP SP2, my question is can I install CPF on this computer with Windows XP pro, and is it going to work, or is any older version of CPF for Windows XP pro, or I will have to look for other firewall? Any advice will be appreciated, thank you. (M)
Yes, CPF works on Windows XP pro.
Welcome to Comodo,
Mike
Thank you Mike (S) 
Your welcome. Feel free to ask anything here on the forums. There are plenty of friendly and extremely helpful users (and Comodo employees) here more than willing to help.
Again, welcome to Comodo.
Mike
Hi snowhite, if you’re not up to lots of popups select to let CPF auto approve safe appls. Hope this helps.