You may have to check and make sure that the tags are allowed for the script you are using if the apache server does not recognize the script as PHP it will tell the page to display as text I think. In any event if PHP is not on the server then it wont matter what you do it wont parse as anything other than text or a download. you might have to change the file extension to php3, php4 or some other name. This may be something to contact your host about.
