Managed to extract .msi from .exe for version 8.7.4 (if you want to skip installing ACE for Office & Bonjour)

• run "DLS8Setup8.7.4.exe"
• continue through install prompt until Licence Agreement
• open %LOCALAPPDATA%\Temp\
• sort contents by Date modified
• scroll to folders - one of the top ones will contain a file named "DYMO Label.msi"

I have recently virtualised this (v8.5.3) with app-v v5, deploying into RDS.

First did the install, deselected the two app parts, left the install device drivers selected.

Then started sequencing and selected the app parts (you can not deselect the drivers). Sequenced OK.

The application launches fine (yes we did have to physically install the device drivers)
There are also Office Addins (Word, Excel and Outlook) only the Excel one is working. We are hoping that they don't actually use the Office add ins so I have not spent any more time on it, but may have to update this info when I do.