With the new certification tracks there is MCTS and MCITP. The MCITP certificates are based on multiple exams. These exams usually make up multiple MCTS exams. So yes, MCTS-SQL is a pre-req for the MCITP, because that MCTS exam is part
of the MCITP track. You will generally take the TS exams first and then the PRO exams second to complete the MCITP track. This link will give you all the different MCITP tracks and what exams are required for each one:
http://www.microsoft.com/learning/en/us/certification/mcitp.aspx#tab2
Generally to prepare I would recommend getting a book that is geared towards the specific exam. If you go to Amazon and type in the exam number in the search blank it will return study materials for that exam. I would also recommend setting up
a virtual lab with your products to get some hands on experience.
Tim Harrington | MVP: Exchange | MCITP: EMA 2007/2010, MCITP: Server 2008, MCTS: OCS | Blog: http://HowDoUC.blogspot.com | Twitter: @twharrington