Hello, I think that this Apache error message is produced because you are having firewall or somethink like. You can either remove or adjust your firewall accordingly or search for Windows's network firewall settings. There must be something about port bidings.
Other solution is to make Apache listen not to 80 but to 3128 port(ports < 1024 are more often used for system service bindings).
Third solution is to change binging address:
in your httpd.conf write this:
Listen 127.0.0.1:80
instead of:
Listen 0.0.0.0:80
Personally I am using Knoppix and there are no such problems.
Hope It helps...