Issue on comodo firewall!Please help!

I installed COMODO firewall Pro v3.0.25.378 32 bit for my XP system.Now it tells me to deactivate any other firewalls by 3rd party softwares!Already I use KIS 2009 and its firewall.Should I deactivate it? ,Will it affect my system badly?
Please help!
Thanks alot!
Answer #1
Should I deactivate it?
yup
pick one or the other
Answer #2
Deactivate any other firewall or else it might lead to a conflict between the two.
Plus, if you’re using COMODO, why not switch to KAV instead of KIS?
Answer #3
yeah what happens is the two fight against one another basically. certain parts of one counter act the pther and vice versa. when this happens things can slip by. id deavtivate kaspersky firewall…