This toolbar sits within the Trimble SketchUp application and gives direct access to all of IES' tools: VE-Ware, VE-Toolkits VE-Gaia and the full VE-Pro suite.
Yes the Thick Walls functionality (Thick Walls analysis, Push Thru Windows & Doors and Build a Storey) are only available in SketchUp Pro.
We're currently running a promotion with Google where anyone who downloads the latest <VE> will get a code to entitle them to 20% off SketchUp Pro. More promo information available from http://www.iesve.com/content/mediaasset ... 0(ROW).pdf.