TWG 1.8 is almost ready. The sprites work better than expected (315 images less!!!! in the TWG download).
I will post the new version in the forum most likely on Saturday. Just go there and look in the Release candidate section for it !
You will find a nice howto use sprites here in the forum soon. I have tried all ways I have found in the net and at the end most them are simly not good. Stay tuned for how this was done in TWG and not in a 2 line example!