I've been looking into SQL Server Integration Services (SSIS) quite a lot lately and have been writing a couple of articles about what I've been doing. My latest one called Easy Package Configuration is available on http://www.sqlis.com. The article explains how to use package configurations to dynamicly alter your SSIS packages at run-time.
The functionality is very similar to that provided by Conchango's SQL Server Accelerator for BI.
- Jamie