How do I make a TOPSY TURVY cake? Is there a cake pan that is used or do you cut the cakes yourself? All the ones I've seen - seem to have the same look. Also, how are they assembled?

You cut the cakes yourself. There is a tutorial in the article section that might help you.

http://forums.egullet.org/index.php?showtopic=71115&pid=969488&st=0

here you go. I found this on the internet by BKieth

This is also in the "articles" section here on CC

There are three different methods that will give you that look.

Topsy turvy, whimsical and crooked cake help:
(There are tutorials, diagrams & help threads.)

http://forum.cakecentral.com/cake-decorating-ftopicp-5877592-.html

http://forum.cakecentral.com/cake-decorating-ftopict-582455-.html
(page 18.)

HTH