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
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.
