Hi,
I opted a while back to running software deployment tasks daily on computers which didn't have that piece of software installed.
This is done by creating a collection of computers which don't have software x installed at version y, and then applying the policy to install your package daily on the computers in this collection.
The simplest way to create the target collection is to,
- Create a collection of computers with software x installed at version y
- Create a target collection which consists of all computers excluding the computers in the collection above
You can get more advanced too.. see http://www.symantec.com/connect/articles/building-better-collections-software-delivery
Kind Regards,
Ian./