For some 3 years I worked in a shop that primarily did ETL work with DTS. I became quite familiar with all of the little quirks and idiosyncrasies of DTS, and I learned exactly how to get stuff done in DTS. DTS is like an old friend to me! But now I’ve started to work with SSIS – SQL Server Integration Services, the replacement for DTS that’s included with SQL Server 2005. The change to SSIS has been a challenge for me, particularly the separation of control flow from data flow. SSIS is vastly different from DTS, so if you have a need to start working with SSIS, do yourself a favor and budget some time to get up to speed. Believe me, you will need it!