Should I delete one of my antiviruses (or add more)?

Right now I have Mcafee Security system (I think 2005 or 2006) but I think it's updated via the internet. [Paid for for a year]

And I just downloaded Comodo Firewall Pro. [Free]

Both, I don't think are that good, so I'm thinking of getting Avast! the free version.

Also when I downloaded Comodo, it said it's HIGH PRIORITY that it will interfere with Mcafee so I should delete Mcafee, but I didn't since I paid for it. And I don't want to delete Comodo because I think only Comodo can detect the 2 keyloggers I THINK it found (it said like MCHotkey or something).

So now what?

Should I delete one of my antiviruses (or add more)?antivirus download

Yup, Comodo Firewall Pro is a firewall. Name's a bit of a give-away. If you've got McAfee's security suite then that will have a firewall with it, and you shouldn't have two firewalls or they will conflict with one another and cause problems.

However, you may have downloaded Comodo's anti-virus program. You can have two anti-virus programs but only one should be running in real-time mode. The other can be used as an on-demand double-check, but it's not really necessary.

If you've got two firewalls then it's a pickle: you've paid for McAfee's but it leaks like a sieve and isn't as good as Comodo's free firewall.