Yes, there are tools available. With our dts packages we see about a 50% conversion failure rate and have to manually do the conversion anyway.

One such tool that can do conversions

http://www.pragmaticworks.com/products/Business-Intelligence/dtsxchange/

ssis tutorial

http://bi-polar23.blogspot.com/2008/03/new-to-ssis-start-here.html

Conversion Article

http://www.sqlmag.com/Article/ArticleID/94095/sql_server_94095.html