Article 1 
The Schengen Information System set up pursuant to the provisions of Title IV of the 1990 Schengen Convention, shall be replaced by a new system, the Schengen Information System II (SIS II), which shall allow for new Member States to be integrated into the system.
Article 2 
The SIS II, which shall be a single integrated system, shall be developed by the Commission, in accordance with the procedures set out in this Decision. The development comprises the preparation of technical integration into SIS II, in particular of the Member States which have acceded to the European Union in 2004.
Article 3 
The measures necessary for the development of SIS II shall be adopted in accordance with the management procedure referred to in Article 5 where they concern matters other than those listed in Article 4.
Article 4 
The measures necessary for the development of SIS II concerning the following matters shall be taken in accordance with the regulatory procedure referred to in Article 6: (a) the design of the physical architecture of the system, including its communication network; (b) technical aspects which have a bearing on the protection of personal data; (c) technical aspects which have serious financial implications for the budgets of the Member States or which have serious technical implications for the national systems of the Member States; (d) the development of security requirements.
Article 4A 
1. Without prejudice to the Commission's responsibility for the development of SIS II, the central unit of SIS II shall be located in Strasbourg (France) and the back-up central unit in Sankt Johann im Pongau (Austria) during the development of the system. 2. France and Austria shall provide the appropriate infrastructure and means to host the central unit and the back-up central unit of SIS II respectively during the development of the system. 3. The national authority providing for the infrastructure and means referred to in paragraph 2 may receive a Community grant for the preparation and maintenance of the site or for providing other services necessary for hosting SIS II during its development.
Article 5 
1. Where reference is made to this Article, the Commission shall be assisted by a management committee composed of the representatives of the Member States and chaired by the representative of the Commission. 2. The committee shall adopt its rules of procedure on a proposal by the chair on the basis of standard rules of procedure which have been published in the Official Journal of the European Communities . 3. The representative of the Commission shall submit to the committee a draft of the measures to be taken. The committee shall deliver its opinion on the draft, within a time-limit which the chairman may lay down according to the urgency of the matter. The opinion shall be delivered by the majority laid down in Article 205(2) of the Treaty establishing the European Community, in the case of decisions which the Council is required to adopt on a proposal from the Commission. The votes of the representatives of the Member States within the committee shall be weighted in the manner set out in that Article. The chairman shall not vote. 4. The Commission shall adopt measures which shall apply immediately. However, if these measures are not in accordance with the opinion of the committee, they shall be communicated by the Commission to the Council forthwith. In that event, the Commission may defer application of the measures which it has decided on for a period of two months from the date of such communication. 5. The Council, acting by qualified majority, may take a different decision within the period provided for by paragraph 4.
Article 6 
1. Where reference is made to this Article, the Commission shall be assisted by a regulatory committee composed of the representatives of the Member States and chaired by the representative of the Commission. 2. The committee shall adopt its rules of procedure on a proposal by the chair on the basis of standard rules of procedure which have been published in the Official Journal of the European Communities . 3. The representative of the Commission shall submit to the committee a draft of the measures to be taken. The committee shall deliver its opinion on the draft within a time-limit which the chairman may lay down according to the urgency of the matter. The opinion shall be delivered by the majority laid down in Article 205(2) of the Treaty establishing the European Community, in the case of decisions which the Council is required to adopt on a proposal from the Commission. The votes of the representatives of the Member States within the committee shall be weighted in the manner set out in that Article. The chairman shall not vote. 4. The Commission shall adopt the measures envisaged if they are in accordance with the opinion of the committee. 5. If the measures envisaged are not in accordance with the opinion of the committee, or if no opinion is delivered, the Commission shall, without delay, submit to the Council a proposal relating to the measures to be taken and shall inform the European Parliament. 6. The Council may act by qualified majority on the proposal, within two months from the date of referral to the Council. If within that period the Council has indicated by qualified majority that it opposes the proposal, the Commission shall re-examine it. It may submit an amended proposal to the Council, re-submit its proposal or present a legislative proposal. If on the expiry of that period the Council has neither adopted the proposed implementing act nor indicated its opposition to the proposal for implementing measures, the proposed implementing act shall be adopted by the Commission.
Article 7 
This Decision shall take effect on the day following that of its publication in the Official Journal. It shall expire on 31 December 2008. ( 1 ) OJ C 183, 29.6.2001, p. 14. ( 2 ) Opinion delivered on 23 October 2001 (not yet published in the Official Journal). ( 3 ) OJ L 239, 22.9.2000, p. 442. ( 4 ) See page 4 of this Official Journal. ( 5 ) OJ L 176, 10.7.1999, p. 31. ( 6 ) OJ L 131, 1.6.2000, p. 43.