So, if what I gather is correct, you want to plug a device with your app on it into a PC and then be able to push files to the PC from the device without having to install anything over on the PC. Is that correct? If so, the next question is are you insane?
It's not possible, and for very good reason. You don't see any potential security problems with being able to just plug a device into a PC and push files up to the PC without the user having to explicitly have installed something to receive that data? I could write a simple attack app that would fill up the PC's hard drive in about 5 minutes.