Transferring careers from one install to another?

[Blitzen]

I have two installs;the downloaded one & the steam version.Is it possible to transfer several already begun careers  from one to another ? if so..how/ i imagine its several folders but I'm not sure which ones I need to do to have them operable in the new location...Thanks!

[Mitthrawnuruodo]

The folders are described here and here.

[Blitzen]

Thanks!Worked like a charm!