What is 2257? I think it is a record keeping law? I want to post photos on a web site that askes if I have a 2257 document for those photos that I made my own. If I post them and don't have a document, am I busted? Why would I need one if "I" made it and took the photo? I'm confused. Any Lawyers in the house? lol.

Make sure you have proof that everyone in the photo were of legal age to be in such a photo. Otherwise, yes, you might be busted.
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§ 2257. Record keeping requirements


(a) Whoever produces any book, magazine, periodical, film, videotape, or other matter which—
(1) contains one or more visual depictions made after November 1, 1990 of actual sexually explicit conduct; and
(2) is produced in whole or in part with materials which have been mailed or shipped in interstate or foreign commerce, or is shipped or transported or is intended for shipment or transportation in interstate or foreign commerce;
shall create and maintain individually identifiable records pertaining to every performer portrayed in such a visual depiction.
(b) Any person to whom subsection (a) applies shall, with respect to every performer portrayed in a visual depiction of actual sexually explicit conduct—
(1) ascertain, by examination of an identification document containing such information, the performer’s name and date of birth, and require the performer to provide such other indicia of his or her identity as may be prescribed by regulations;
(2) ascertain any name, other than the performer’s present and correct name, ever used by the performer including maiden name, alias, nickname, stage, or professional name; and
(3) record in the records required by subsection (a) the information required by paragraphs (1) and (2) of this subsection and such other identifying information as may be prescribed by regulation.
(c) Any person to whom subsection (a) applies shall maintain the records required by this section at his business premises, or at such other place as the Attorney General may by regulation prescribe and shall make such records available to the Attorney General for inspection at all reasonable times.
(d)
(1) No information or evidence obtained from records required to be created or maintained by this section shall, except as provided in this section, directly or indirectly, be used as evidence against any person with respect to any violation of law.
(2) Paragraph (1) of this subsection shall not preclude the use of such information or evidence in a prosecution or other action for a violation of this chapter or chapter 71, or for a violation of any applicable provision of law with respect to the furnishing of false information.
(e)
(1) Any person to whom subsection (a) applies shall cause to be affixed to every copy of any matter described in paragraph (1) of subsection (a) of this section, in such manner and in such form as the Attorney General shall by regulations prescribe, a statement describing where the records required by this section with respect to all performers depicted in that copy of the matter may be located.
(2) If the person to whom subsection (a) of this section applies is an organization the statement required by this subsection shall include the name, title, and business address of the individual employed by such organization responsible for maintaining the records required by this section.
(f) It shall be unlawful—
(1) for any person to whom subsection (a) applies to fail to create or maintain the records as required by subsections (a) and (c) or by any regulation promulgated under this section;
(2) for any person to whom subsection (a) applies knowingly to make any false entry in or knowingly to fail to make an appropriate entry in, any record required by subsection (b) of this section or any regulation promulgated under this section;
(3) for any person to whom subsection (a) applies knowingly to fail to comply with the provisions of subsection (e) or any regulation promulgated pursuant to that subsection; and
(4) for any person knowingly to sell or otherwise transfer, or offer for sale or transfer, any book, magazine, periodical, film, video, or other matter, produce in whole or in part with materials which have been mailed or shipped in interstate or foreign commerce or which is intended for shipment in interstate or foreign commerce, which—
(A) contains one or more visual depictions made after the effective date of this subsection of actual sexually explicit conduct; and
(B) is produced in whole or in part with materials which have been mailed or shipped in interstate or foreign commerce, or is shipped or transported or is intended for shipment or transportation in interstate or foreign commerce;
which does not have affixed thereto, in a manner prescribed as set forth in subsection (e)(1), a statement describing where the records required by this section may be located, but such person shall have no duty to determine the accuracy of the contents of the statement or the records required to be kept.
(g) The Attorney General shall issue appropriate regulations to carry out this section.
(h) As used in this section—
(1) the term “actual sexually explicit conduct” means actual but not simulated conduct as defined in subparagraphs (A) through (D) of paragraph (2) of section 2256 of this title;
(2) “identification document” has the meaning given that term in section 1028 (d) of this title;
(3) the term “produces” means to produce, manufacture, or publish any book, magazine, periodical, film, video tape, computer generated image, digital image, or picture, or other similar matter and includes the duplication, reproduction, or reissuing of any such matter, but does not include mere distribution or any other activity which does not involve hiring, contracting for managing, or otherwise arranging for the participation of the performers depicted; and
(4) the term “performer” includes any person portrayed in a visual depiction engaging in, or assisting another person to engage in, actual sexually explicit conduct.
(i) Whoever violates this section shall be imprisoned for not more than 5 years, and fined in accordance with the provisions of this title, or both. Whoever violates this section after having been convicted of a violation punishable under this section shall be imprisoned for any period of years not more than 10 years but not less than 2 years, and fined in accordance with the provisions of this title, or both.


http://www.law.cornell.edu/uscode/18/usc_sec_18_00002257----000-.html

How sould I proove that the person in the photo was of legal age at that time which they were by the way (18+) Show their whole face/body or have them sign something that I wrtie up?

I would find it hard to believe that something you write up and someone else signs, coupled with a picture showing the face and whole body of one of the people portrayed, constituted legal proof of anything much. I'd abandon the whole idea. IMHO.