AI OnAI Off
I have used this helper class in a project long time ago... http://www.codeproject.com/Articles/11991/An-FTP-client-library-for-NET-2-0
Still works great but note that I haven't checked if new .NET versions have added more FTP support, there might be something better there...
Then you just need to pick a spot (could be plugin/upload event or scheduled job) to iterate the IV files and upload them.