WAMP Server does not start properly (port occupied)

I am trying to test my web application with the WAMP server, but Apache does not start properly.
2 answers

The port is occupied by another application already, thus WAMP cannot start. Run netstat -a -b to identify all processes with network connections, find those, listening on port 80 and 8080 (Skype, etc). Terminate those processes. Restart WAMP, all Servers should start now correctly. The other processes can be started again (Skype in particular will default to another port as the WAMP ports are now taken).