在IIS7上安装Wamp服务器64位的问题

I have IIS7 server to host my websites. Earlier I used .net technology but now i want to make a website in PHP and for back end I will use Mysql server. But I am facing a problem in installing Wamp server on my server because when I installed the Wamp server it show me orange color. And not trun in green color. And I cannot stop IIS7. So, I want to run both server. Please Help me. Thanks in advance. I have IIS7 server to host my websites. Earlier