New businesses are required to obtain their Resell Certificate, EPA #, and Federal Employer ID #.  SRI can help you obtain ID numbers and properly set up the company to do business in California. Following links are provided to answer some of the questions you may have:

http://www.irs.gov/businesses/small/article/0,,id=98350,00.html

http://www.boe.ca.gov/sptaxprog/spenvirofees.htm