Is it possible to use a plugin via the Project Automation API to automate it?

Hi,

We are using the StarTransit plugin, but we want to automate the import of PPF files. Is this possible via the Project Automation API (together with the PowerShell Toolkit)?
Right now, when using the plugin, the "Open StarTransit Package" ribbon button for PPF import results in a dialog (for destination path, etc...). Will this prevent automation?
Is it possible to alter/extand the plugin to make automation possible? If yes, in what way?
I'm a newbie in SDL Plugin creation, but have some experience with Visual Studio and C#.

Thanks!