BETHESDA, Md., Oct. 3, 2008 (GLOBE NEWSWIRE) -- OPNET Technologies, Inc. (Nasdaq:OPNT) will hold an investor conference call on Thursday, October 30, 2008 at 5:00 pm Eastern Time to review financial results for the second quarter of fiscal 2009.

To listen to the OPNET investor conference call:

 * Call 877-407-9205 in the U.S. or 201-689-8054 for international
   callers, or
 * Use the webcast at www.opnet.com, or at www.investorcalendar.com
   (click on OPNT under "VCalls by Date"). 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 877-660-6853 or 201-612-7415 for
   international callers. For replay, enter account # 286, conference
   ID # 299212. The replay will be available from 7:00 pm Eastern
   Time October 30th through 11:59 pm Eastern Time November 6th.
 * The webcast will be available at www.opnet.com or at
   www.investorcalendar.com, archived for seven days.

The second quarter of fiscal 2009 financial results will be released after the market closes on Thursday, October 30, 2008.

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
            www.opnet.com
          Investor Relations:
          Mel Wesley
            (240) 497-3000
            ir@opnet.com
            www.opnet.com