I hold CCNA, CCDA and CCDP certifications. they will all expire end of November 2009.
I need to double check if I can do only one 642 exam such as 642-811 and whether this will recertify all 3 certifications (CCNA, CCDA and CCDP).
Alternatively you may take any Cisco CCIE exam and that will definitively help you a long time.
Depending on the field you work, Nov may or may not leave a lot of room for preparation though, however next time onwards attempting a CCIE Qual is a best way to get recertified IMHO.
All the best, also please rate all the helpful posts.