hi i am wondering how you get the diamond or quilt look on a fondant cake
thank you

Easiest way would be to get a diamond impression mat or you can use a ruler or some other similar object and impress it into the fondant.

There are many threads on this particular topic, here are just a few of the threads that might help:

http://cakecentral.com/cake-decorating-ftopict-647314-quilt.html+fondant
http://cakecentral.com/cake-decorating-ftopict-629293-quilt.html+fondant
http://cakecentral.com/cake-decorating-ftopict-621786-quilt.html+fondant

BTW, welcome to CC!

Here's another link that might be helpful (it's a list of commonly used acronyms on CC):
http://cakecentral.com/cake-decorating-ftopict-2926.html

I love the impression mat! I use it on buttercream as well. I am planning on doing a "practice" cake tomorrow with a new fondant that was recommended and the impression mat for the quilted look. I am excited. It is for practice for a wedding cake that I have commited to in April 2010.

thank you to all
country girl i would love to see your practice cake

This is my practice cake for quilting on fondant using the impression mat. This fondant was an absolute pleasure to work with. When I do it again, I am going to roll it out thicker, to get a better "quilted" look. However, I was pleased with my first try.

coundtrygirl thanks for the picture you did a great job
I will have to try and find one of those mats
thanks again

Thanks! The mat was only like $6, and they have all kinds of them. Some look like brick walls, cobble stone, they are endless!! I love the ides of how easy it is.
Good luck! Post a pic when you get to try it.

i will post a picture when i get a chance to try one
thanks again

Mmmm, for fondant, get a three diamond cutter, look at the pink princess cake in my pics. It makes for a much cleaner defined look. Jennifer Dontz sells them on her site, SugarDelites. An indispensible tool for sure!