The material you have covers the v5 CEH exam but the v6 exam has additional modules that won't be covered in the material you have. The EC-Council have more information on the v6 course modules here:
http://www.eccouncil.org/training/course_outline/ceh_course_outline.aspxI'd recommend to compare what the EC Council v6 covers and what you have.
VoIP and Bluetooth hacking are new to v6 amongst others.
This thread is also worth a read:
http://www.ethicalhacker.net/content/view/190/24/Personally I'd recommend to get study material that covers the v6 exam, or research the modules you don't have as much as possible to fill in the gaps. It might also be worth getting hold of some practice tests for the CEH exam, if you do purchase the practice tests make sure that they are recent and cover the v6 exam.
Good luck!