Remote start with standard key

[bashman40]

Hi guys needed some advice from a genius on how to hock up a remote start to my car using the standard alarm and key just by adding a add on remote start module is it possible? I done want an extra big fob with my keys hence why I don’t want the after-market alarm system added to my car.
Needed to know what would do it and how?

I have a vw Passat CC tdi 170 DGG 2009