Edward,
Firstly, welcome to the community. We appreciate your input.
Yes there is a way to silently install the VSP3D Exporter for Civil 3D. The following command line options may be specified after calling the installer EXE:
/unattended
Triggers a silent install, causing all install panels not to be displayed.
/dexportpath:
This one is optional, and allows the default install path to be overridden with a custom install path.
So, you could use the following for instance:
VSP3DExporter2010.exe /unattended
VSP3DExporter2010.exe /unattended /dexportpath:"c:\program files\myfolder\"
Similar command line switches also exist for Dynamite VSP itself.
I hope this helps.
Best regards,
Bruce