1. You have to make the all the images yourself, if not find some [each with different angles/movements etc.] (I don't know how to make them)
2) Just copy a .wil and stick it on your desktop, open it in HH8 delete all images and import your images (with different angles like I mentioned in [1.])
Depending on what files you use, you name it differently.
23 Reads x-127. No idea, would have to check really.
No idea what you'd have to do with the .wix though - I'd check one out but can't find HH8.