Get-MSP-Fileversion possible?

Hi

I'm currently writing an update script and had various problems.

My current problem is to check the fileversion of msp-update files.

I can check the msi-version of the mui-packages

Is this possible?

Other question: I use the propertys of Acrord32.dll to get the current version installed. Normally as I heard it is also in the registry.

Sadly checking the registry didnt work for me:

HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\9.0\Installer

• Value DEU_GUID: {AC76BA86-7AD7-1031-7B44-A90000000001} 9.0
• Value DEU_GUID: {AC76BA86-7AD7-1031-7B44-A91000000001} 9.1
• Value DEU_GUID: {AC76BA86-7AD7-1031-7B44-A93000000001} 9.3

So as you can see nothing changed. So, where do you look and find the current version?

Thanks in advance