If you come across encrypted DTSRun commands, here's a way to decrypt them.
Drop down to the command prompt and paste in the full DTSRun string:
C:\>DTSRun /~ZThisWouldBeYourBigUglyDTSRunCommandString /!X /!C
Everything after C:\> is directly from the Job's Command text box. You have to add /!X and /!C to the end. Hit Enter to run it and the results then end up in your "paste" buffer, so you can just Ctrl+V into Notepad or wherever.
This seems to fail if the DTS is connecting to a server not setup on your machine. You may see something like the error below. Just add the remote machine to Enterprise Manager.
Error: -2147467259 (80004005); Provider Error: 17 (11)
Error string: [DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied.
Error source: Microsoft OLE DB Provider for SQL Server
Help context: 0
Thanks to the guys over at RDA Blogs for posting about this.