Questions about comodo firewall+ anti virus?

i am using windows xp sp3 and avast home edition. i am thinking of installing comodo firewall but in there download link they are giving comodo firewall+anti virus. so do i need to uninstall avast for install it.
thx in advance. sorry if this is wrong forum category

Hai, bro!
Make sure you untick antivirus option if present during installation and for only firewall, you can continue to use Avast… :-TU

You can also use the firewall with Defense+ (HIPS). They both work with another antivirus.