PRINCETON, N.J.--(BUSINESS WIRE)--PharmaNet Development Group, Inc. (NASDAQ: PDGI), a leading provider of drug development services, today announced that it will release its fourth quarter 2007 financial results and provide 2008 guidance on Thursday, February 28, 2008 before the market opens. Following the pre-market release, the Company plans to host a conference call and webcast to review these results at 8:30 am Eastern Time.