If you want to bring your spouse to the United States and obtain a green card or permanent resident you must be a US citizen or a green card holder yourself.
If you are a US citizen residing in a foreign country you will have to file form I-130. This form can be filed at the nearest US Embassy or Consulate to you. When this form is approved it will be sent to the embassy or consulate and they will process it and inform you on what your next step will be.
There are certain documents that you will have to submit when you file form I-130. A copy of your civil marriage certificate, a copy of any divorce decrees , death certificate, or annulment papers that will prove that any previous marriages entered into by you or your spouse are now terminated. You will need passport style photos of you and your spouse . If you have changed your name legally you must bring proof of this also. If you are a citizen you must show proof with a birth certificate or a U.S. passport. for more information on this process go to the U.S. Citizenship and Immigration Services web site good luck.