This install is very similar to the NVivo 7 notes on this site. Basically you need to run through a full install on a test machine to get the files from the single install file.
Worth noting is that the installer now requires Quicktime 7 and Windows Media Player 11. Packages for both inside the main installer.
Start the main installer (setup.exe) and open your temp folder to scoop up the file as the installer extracts them. Best way to do this is to run 'explorer %temp%' from the Run prompt and then organize folders by date. WAIT until the NVivo component has been fully extracted towards the end of the install process (there's a lot of components that come before this) and then copy the entire contents to a share for deployment.
Note you will need the above method for getting the Service Pack files later.
Finally - to make things simpler later - in your deployment copy of the install files, move the individual files out of the sub-folders so all the files are at the same folder level. Now look at the Commands tab on this page for silent commands that worked for me.
Note that I have put the service pack files in a separate sub-folder to the files included in the main NVivo deployment - there were some .ini files with the same names. The 'SHORTFILENAMES' command isn't documented anywhere by QSR - that's from a suggestion elsewhere on AppDeploy.com - but it worked first time for me.