Recently I got a text file from a customer. They'd exported all the DTS packages to this file, and told me I just had to create a new DTS package to import them all into the SysDtsPackages table in SQL Server 2000. I'd never done that before, and had to find out how. This doesn't seem to be discussed a lot on the Internet, or I might have used the wrong words while searching.
In the end I found this very clear guide written by Darren Green, "Transferring DTS Packages":
http://www.sqldts.com/204.aspx
I did it slightly differently. I created a copy of the SYSDTSPackages table in the MSDB database, and used the Import / Export wizard to populate this new table from my text file. Then I created the package with a Source and Destination connection, did the "Disconnected edit" and imported it all. The only difference was thatI updated the SourceObjectName to be the name of my copy table. Brilliant! It worked like a charm!
After having looked through all the DTS packages, I must say that I'm a lot more happy working with SSIS...