In the DTS GUI, the package and version GUIDs are in the package properties dialog box.  You can find the package name in msdb..sysdtspackages like this:

SELECT     name

FROM         sysdtspackages

WHERE     (id = '{55521ACB-1643-45CD-B882-A6AB20FF59F8}') OR

                      (versionid = '{67B35377-A60B-4EC8-A240-184CFD12834E}')

Fields:

name is the package name

id is the package GUID

versionid is the version GUID

If you have the Wrox SQL Server 2000 DTS book, see page 69 to read about the switches.