Exhibit 99.1 Joint Filing Agreement In accordance with Rule 13d-1(k) under the Securities Exchange Act, as amended, the undersigned hereby agree to the joint filing on behalf of each of them on a statement on Schedule 13D (including amendments...Joint Filing Agreement • January 4th, 2008 • Neuberg David • Services-miscellaneous business services
In accordance with Rule 13d-1(k) under the Securities Exchange Act, as amended, the undersigned hereby agree to the joint filing on behalf of each of them on a statement on Schedule 13D (including amendments thereto) with respect to the Common Stock, par value $.001 per share, of Sentra Consulting Corp. and that this Agreement be included as an Exhibit to such joint filing.
LOCK UP AGREEMENT This Lock Up Agreement (the "Agreement") is made as of the 21 day of December, 2007, by the signatories hereto (each a "Holder"), in connection with his ownership of shares of Sentra Consulting Corp., a Nevada corporation (the...Lock Up Agreement • January 4th, 2008 • Neuberg David • Services-miscellaneous business services • New York
