March 24, 2008

Hamilton Engineering, Inc. Completes Add-on Acquisition

HOUSTON (MARCH 24, 2007) –The Partners of Vista Private Equity Group, LLP are pleased to announce that Hamilton Engineering, Inc. (“HEI”), a Vista portfolio company, has acquired Petroleum Engineers, Inc. (“PEI”).

Based in Lafayette, Louisiana, and founded in 1970, PEI is a leading provider of well design, planning, engineering and project management services to the oil and gas industry. Together, Hamilton and PEI enjoy a highly diverse and complementary customer base, and the combined service capabilities of the two companies will enable Hamilton to deliver a unique and comprehensive service offering to operators throughout the oil and gas industry.

Vista sourced and led HEI’s acquisition of PEI.

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About Vista Private Equity Group, LLP

Vista Private Equity Group is a Houston-based private equity / real estate development firm led by Greg Houghtaling, Kurt Keene and Brent Mann. Vista provides equity capital to support private companies facing an ownership transition or transformative growth initiatives. Vista is also focused on generating ground up retail, medical, and urban mixed-use real estate development projects. For more information, please visit our website at