HELP REGARDING R&S VER 4

Hi friends,
               I am preparing for CCIE r&s v4.0.I am planning to write the
lab on feb 2010.So can anyone provide me any links of internetwork expert
worbook 1,2,3 and also the new one of version 4.It would be really helpful.
Thanks in advance

-- 
Problems arise Bcoz we talk,prblms r not solve bcoz we dont talk So gud r
bad talk to ur affectionate one's freely
Urs Friendly,
HP HEMANTH RAJ
Blogs and organic groups at http://www.ccie.net