I tried the solution above but it didn't seem to work for me. When I run the test it just opens the results page and tells me my firewall failed, but it seems to pass as it doesn't know what i typed in the test. Then bizarly about a minute later i get the pop up asking me if I want to allow the cpil file to run. More worryingly, the two times I have run this test has coincided with a complete shut down of my computers wireless capabilities. I can connect to mine or a friends wireless but it wont allow any traffic of any kind. But it still works over a land connection. Even after i install comodo it still doesn't work so I don't even know if its comodos fault. Then after a couple of days everything starts working again. Its working again now though but I ain't running that test again as I like the firewall but I'll have to go back to kerio if I have anymore problems.
Do you have some other security software installed? It seems to me that either you have another security product or your previous security product is not properly uninstalled.