I'm working for a client who rents a dedicated server running Windows Server 2008 (I'm almost certain) and has someone they know managing the server. We've built a new site built in WordPress MU and Magento which is a pain to install on IIS when I can't access the server configuration.
We've asked the admin to install Apache on the server simultaneously, running on a different port at first until we confirm everything is alright. The thing is, he has said that PHP can only be installed for either IIS or Apache and not both. Is this right?