Fresh Install and can't resolve domains


I’ve just installed Comodo Firewall 3
Followed the instructions, didn’t install the toolbar however.

Problem is I am unable to resolve any domain names.
I can however ping numeric IPs (LAN & nternet)

I’ve got a dd-wrt Linksys firewall/router and all the other machines on my LAN are ok.
As soon as I uninstall Comodo, everything returns back to normal… so I can safely say that its isolated to Comodo.

I’ve also tried searching the forums, but i’m no exactly sure which terms to use. I’ve tried DNS, nameserver…etc…

I am a bit lost.