You can upgrade to pI 3 from the purchased version of pI SE for 150 bucks, but not from the free version that comes with Digit. That's Alan's way of making those of us who bought SE not feel cheated. That said, pI SE is an amazing package, itself. It's truly awesome in combination with other packages like AfterEffects. There are also some export tools designed for use with 3DS and Lightwave for tracking pI effects into 3D packages, but nothing has been developed for Cararra as far as I know. Get it if you can; it's a very fun tool! (You may need to update the drivers for your video card, but you should probably do that anyway!)