Best way to register a dll which is part of the package is ,

Go to Files section in Wise Package Studio

Select the dll  -> Double click the dll - > go to self registeration ->

Select the Registration method -> Use order specified below...

These steps will result in auotomatic self registration in the package using

Msiexec.exe /y & /z for registeration \ unregister the dll.

While tirelessly looking for a method to automatically uninstall Workflow Designer instances found on clients machines, I  stumbled upon this little gem:
 
C:\Program Files\Altiris\Workflow Designer\Uninstall.exe
 
Just add an /S at the end for a silent uninstall
 
I have it setup in a software delivery job to run on a collection that is built using 'All computers' - 'Authorized Designers'.  The latter is a manually updated collection for now since it a small and static (for the most part).  I could also wait for the Operating System Inventory to populate (tablename: Inv_AeX_OS_Add_Remove_Programs), since that contains the contents of Add/Remove Programs and just build a sql query based collection for that.  Which I will probably do in the near future.
 
Hope this article was helpful.  Short, sweet and to the point.
 
Thank you.

I have noticed that most of the links to sites "designed to help beginners" generally talk about how to create msi's, how to modify these packages or even how to fix some ICE errors. However, these sites do not give beginners any information on very important basic concepts such as Self Healing, Installation Sequences, how to read the logs generated on installation of the msi. These "basic" concepts can help beginners understand things like how these ICE errors occur or say in the even of a failed msi installation where to look in the package based on the information given by the verbose log file.

This site (written by John McFadyen) will provide detailed information on these concepts Windows Installer Blog.

Happy reading!! :-)

MSI logging can be expanded beyond installs and uninstalls.  It can also record any MSI action, such as repairs or self-heals.  Setting up a system policy to enable MSI logging can do this.   Since policies are presented locally as registry entries, use these steps to do it:

1. Launch Regedit and navigate to HKLM \Software\Policies\Microsoft\Windows\Installer.
2. Create a REG_SZ value named Logging.
3. Set the data to voicewarmup
4. Done.