i came across this from pearson vue test centre news for those who want to know more about the cisco promo

Cisco
Cisco “ComeBack2009” and “Specialize” Promotions
Cisco is launching two new promotions that may be of interest to your IT candidates.

The first, ComeBack2009, reaches out to individuals with lapsed certifications who may be hesitant about renewing their certification.

The ComeBack2009 promotion is for anyone who has achieved a Cisco certification in the past, but for whatever reason has let their certification credential lapse. If they take a full-priced exam now and don’t pass it, they can get a second chance in the form of a free retake. This gives those with lapsed certifications a jump start toward earning back their credential. Candidates must complete all exams needed for a certification in order to gain back their certification. Further details can be found at PearsonVUE.com/Cisco/ComeBack2009.
The second promotion, Specialize, is designed to promote Cisco’s new CCNA specialization certifications, announced last summer.

The Specialize promotion encourages those who currently have a Cisco CCNA certification to “specialize” in a Cisco CCNA concentration. Individuals who take a full-priced CCNA concentration exam will be given a free retake exam should they need it. This offer is only valid for 640-460-IIUC CCNA Voice, 640-553 IINS CCNA Security and 640-721 IUWNE CCNA Wireless exams. Further details can be found at PearsonVUE.com/Cisco/Specialize.
With each of these promotions, both the initial exams and the free retakes must be scheduled and taken between January 20, 2009, and July 20, 2009, and regular retake rules apply. Candidates who are eligible for these promotions were invited to participate in an email blast sent by Cisco and they will receive a reminder midway through the promotion period.