BETHESDA, Md., April 13, 2009 (GLOBE NEWSWIRE) -- OPNET Technologies, Inc. (Nasdaq:OPNT) will hold an investor conference call on Wednesday, May 13, 2009 at 5:00 pm Eastern Time to review financial results for the fourth quarter of fiscal 2009.

To listen to the OPNET investor conference call:

 * Call 877-879-6203 in the U.S. or 719-325-4785 for international
   callers, or
 * Use the webcast at www.opnet.com. Investors are advised to go to the
   web site at least 15 minutes early to register, download, and
   install any necessary audio software.

To listen to the archived call:

 * Call the replay phone number at 888-203-1112 or 719-457-0820 for
   international callers. For replay, enter replay passcode # 9433697.
   The replay will be available from 8:00 pm Eastern Time May 13th
   through 11:59 pm Eastern Time May 20th.
 * The webcast will be available at www.opnet.com, archived for seven
   days.

The fourth quarter of fiscal 2009 financial results will be released after the market closes on Wednesday, May 13, 2009.

About OPNET Technologies, Inc.

Founded in 1986, OPNET Technologies, Inc. (Nasdaq:OPNT) is a leading provider of solutions for managing networks and applications. For more information about OPNET and its products, visit www.opnet.com.

OPNET and OPNET Technologies, Inc. are trademarks of OPNET Technologies, Inc. All other trademarks are the property of their respective owners.

CONTACT:  OPNET Technologies, Inc.
          Media Contact:
          Margarita Castillo
            (240) 497-3000
            Media@opnet.com
          Investor Relations:
          Mel Wesley
            (240) 497-3000
            ir@opnet.com
          www.opnet.com