Thank you all for your reply. I have bought this Cisco CCNA #640-507 Preparation Library Package. It contains 3 books naming ICND, Internetworking Technologies Handbook and Certification guide. There is also a CCNA trainig kit CD that I have already installed and have done some readings.
I also do work with this department and I mostly work with cisco routers hooking up site mostly on Frame relay and point-to-point lease lines mainly on TCP/IP and DEC protocol. We also operate a couple of 2900 cisco switches and a 2948G.
Right now Im working with router models ranging from 1601,1720,2522,2511 and mostly running IOS ver 11 to 12.
I hope that when I finish with the books and the CD with that little experience, I will pass that CCNA test.
Anyway thanks for all the info.
best regards