Professional Microsoft SQL Server 2008 Integration Services
by SQL Server MVPs Brian Knight and Erik Veerman, our own broadly smiling Grant Dickinson, and industry experts Douglas Hinson and Darren Herbold
At this writing, US $31.49 on Amazon.com and in stock.
Although this is the 2008 update to the 2005 version of the book, it has been massively updated with new material. It has also been carefully tech reviewed by yours truly and several other members of the product and documentation teams at Microsoft. Take a look (on Amazon) at the impressive table of contents!