how to restore httpd.conf (or apache) to default

Hi,

I would like to restore apache 2 to its default install situation to
enable me to rule out apache config as the source of my problems... I
didn't back up my httpd.conf before I amended it (stupid I know)... is
there an easy way to either reinstall apache or restore a default
httpd.conf ?

Its a centos4 operating system.... Help much apprecciated, the more
idiot proof the better


Thanks

Brian