[Resolved] Someone is owning port 80

I installed XAMPP and tried to install Apache as a service and it said "Ports 80 or 443 is (SSL) already in use! Installing Apache2.2 service failed!". I installed Apache and uninstalled it before installing XAMPP. Maybe the uninstallation didn't clean properly, so maybe that's the case. But how do I remove the service owning port 80? When I netstat -n, I don't see port 80 being used. When I look at Services, I don't see Apache there. Any help? Thanks a lot.

Thanks Adam for pointing me /ab and it's showing inetinfo (IIS) is locking it. Need to kill IIS. :) Again, thanks!

No problem ;)