title: In Netbeans 6.9, how to change Application Server
body: <p>In Netbeans 6.9.1, i've created a web application wiht Glassfish Server 3.<br>
  (Undert the server textbox, java ee version defautls to "Java EE 6 Web").<br>
  Now I've installed an Apache tomcat 7 (actually it sees it as 6 because the 7 version was not provided in Netbeans 6.9.1). <br>
  The problem is that i'm no more allowed to choose Tomcat, it doesn't appear in the server combobox of the project properties.<br>
  If I do a web app from scratch, i can.<br> 
  I tried to:<br>
  -remove WEB-INF/sun-config.xml<br>
  -close and reopen the project<br></p>