You don't have to keep starting new threads for a single question.
A little more effort from your end is also never a bad thing.
We are all for helping people who are new a long, but not joining discussing in the numerous threads you have already started will make people wonder if you are actually looking for help or if you are looking for people to chew out the answers for you.
/endrant
I googled "SFX PSU Cutout"
First image in the search result is what you want, you only need to input the dimensions in you software package of choice.
Also first search result is a PDF that has all the dimensions in a vector format.
http://www.formfactors.org/developer\specs\SFX12V.pdf
Page 36
Image
http://cdn.overclock.net/5/5d/500x1000px-LL-5d1becb1_SFXpanelcutout.PNG