Some weong when I start the apache and PHP

Hello everyone! I just have installed the apache and PHP. When I installed apache, I ran the command "./apachectl start" in its directory and there was an information showing that it has been running, but when I input "http://localhost/" in browser I can't link to localhost.The error mesage is below: "The connection was refused when attepting to contact localhost." Then I install PHP succesfully and start apache another time, there was no info to show it has been start or it has something wrong, and I can't link to localhost either. I use apache2 and php-4.3.7 and installed both according to http://php.net/manual/install.apache2.php. Anyone knows where the problem may be? Thanks a lot! --------------------------------- Do You Yahoo!? 美女明星应有尽有，"一搜"搜遍美图、艳图和酷图 100兆邮箱够不够用？雅虎电邮自助扩容！