All adapter related files below are located in /adapters// of this zip file. Your include order should be: Ext Stand-alone ------------------------------------------------------------------- ext-base.js ext-all.js (or your choice of files) Yahoo! UI (.12+) ------------------------------------------------------------------- yui-utilities.js ext-yui-adapter.js ext-all.js (or your choice of files) jQuery (1.1+) ------------------------------------------------------------------- jquery.js ext-jquery-adapter.js ext-all.js (or your choice of files) Prototype (1.5+) / Scriptaculous (1.7+) ------------------------------------------------------------------- prototype.js scriptaculous.js?load=effects (or whatever you want to load) ext-prototype-adapter.js ext-all.js (or your choice of files) See the examples folders for more examples.