It required a lot of paperwork, some accounting information, and general information such as names and addresses of the governing board, statement of purpose, past activities, current activities, and future activities. It was tedious, as is most things when dealing with the IRS, but doable.
Here is some information you might find useful from the IRS website:
http://www.irs.gov/charit...cle/0,,id=96099,00.html/
http://www.irs.gov/publications/p557/ch03.html
The form you will have to complete to request official 501c3 status is IRS Form 1023.
In addition to being established as a corporation, you will need by-laws that have certain language in them. We had a booster member get his attorneys to do this for us pro bono. If you have any attorneys in your church they might be able to do it or you might ask folks in your church if they know a lawyer that will do this for y'all.
In doing my research, I found a website that has experts to answer questions about different topics. They have a 501 c3 area. Here's the link
http://www.allexperts.com/central/service.htm
Put in 501 c3 churches in the find function at the top right of the webpage and start reading. I posted a couple of questions during my research and an attorney answered. I also learned a lot from reading other people's questions.
Just start reading IRS publications and researching on the web about other churches becoming 501 c3's. If you are persistent, you can find some good information that will help you.
Good luck.