If you are using French translation of Total Commander (v10.0+), you can type "gaup" in the 'Extension for packer' field
If you are using English translation of Total Commander, you can type "gaup.wcx" in the 'Extension for packer' field
This article describes in details how to view and extract resources from MSI and msi packages.
MSI packages usually have the following directory structure:
+ 66cf4387b8 malyal