Hi Vince,
when you compile GzipAll.BAt is created for you in the app folder, and it in turn makes all the "all" files. It uses the settins from inside your app to add your custom css and js, and also takes into account aby additional themes you may have added in your themes folder.
You should see the batch file run when you first compile. If it doesn't run let me know the details (Clarion version etc). Try running it manually.
There's also another batch file, CopyAll.Bat which shoul also run.
cheers
Bruce