That Lego robot kit (I can't remember what it is called) what is it's programming structure like?

I think the robot kit you're looking for is the 'Mindstorms NXT Robot Kit."

http://shopping.discovery.com/product-60351.html?jzid=40602653-0-0&seqStr=lego+robot+kit

The controller for the Mindstorms kit is a commercial version of the MIT programmable Brick, a large version of the PICO Cricket controller.

http://llk.media.mit.edu/projects.php?id=1942

According to the FAQ on the PICO webpage, Cricket controllers use a proprietary software called PicoBlocks.

http://www.picocricket.com/faq.html

You can download the PicoBlocks software at the following link for free:

http://www.picocricket.com/download.html

Happy coding!