Configuring App Pools using Code (or scripts)

I am trying to create a script to go through all of the creation of App Pools, Virtual Dirs, and everything else in IIS that we are using in our project. I have one problem and that is configuring the App Pools to run as a configurable user.

I have this code from the MSDN site:

static void CreateAppPool(string AppPoolName)
{
DirectoryEntry newpool;
DirectoryEntry apppools=new DirectoryEntry("IIS://localhost/W3SVC/AppPools");
newpool=apppools.Children.Add(AppPoolName, "IIsApplicationPool");
newpool.CommitChanges();
}

and it creates the App Pool but the identity is a "Predefined" and "Network Service", but I need the Identity tab to read "Configurable" with our custom user and password. Does anyone know (code, utils, anything else I can put in a batch file) that would allow me to change the identity of the App Pools?

I don't know, but I recall an article in windows & net magazine about scripting IIS administration not too many issues back, maybe you can find the article on their website.

hope this helps:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/iissdk/iis/changing_the_identity_of_a_worker_process.asp