Php is not working with wamp even

sir,i did installed aoache-mysql-php but it didn’t worked then i studiesd abt some more configurations on net i changed it but still didn,t worked i then decided to start from scratch that is to go for new ionstallation but everytime when i do this i get document root is not closed
apache monitor already started and it still does not work .what should i do to run my php pages soon.and now i have downloaded wamp it is an auto cofigured installes but even this is not working plz help me i m tired of this what shud i di plz plz help