Hi Thomas, sure we can with DS 6.9. :)
But this depending MBailey if your job can be trace from the inventory, or not. As you build the job, you can build the additional trace needing to build a such.
Inventory from DS 6.9 is very limited: can get firmware/hardware inventory (eg. bios versions), device inventory (device manager from Windows), and Add/remove software inventory.
So, in you job, add your own <MyEntry> in the "uninstall" Windows HKLM registry key (you can hide from add/remove windows display list), to add the entry of your job executed correctly. Do not forgot to add also a "get inventory" task after this.
After doing this: you can create a "condition" rule associated a job, or just display on the console the list of "computers not having <MyEntry> in add/remove".
So you can select & drag/drop all those "missing" computers to your job again.
You can also repeat this job daily, using a condition, to run only on missing computers !! That's it.
Please tell me If I answer correctly marking this a solution.
Enjoy DS 6.9, all the same end of life product to be replaced with DS 7.x. But I don't know if I will tell you "OK go", on the version 7.2 or 7.3, and which SP version, before we will get a "goal". But I am pretty sure Symantec will do the job, after a while... ;-)