Installing Development Webserver

I am currently attempting to install Apache 2.2 web server onto my PC running XP (Service Pk 2) as a development server. (I have had earlier versions running fine). Installation has gone well until I try to start the service and I get the following error message:

Code:

<OS 10048>Only on usage of each socket address (protocol/network address/port) is normally permitted. : make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down
Unable to open logs

.
I have tried to find out what program or service has got port 80 assigned to it using

Code:

netstat -b

No luck.
I started the system in safe mode with networking and was able to install the service with no errors but it won't start.

Any ideas on how to find out what is grabbing port 80?

I am getting to the desperate stage after 4 days and nights. No development being done either.