how to add steam vr (vive) to FPS unity 5.4

How to add that freaky steam VR to my Unity standard FPS controler?
Iam adding a script Steam VR_Camera to FirstPersonCharacter, I click expand
I get
View attachment 188953

but when I use vive the position of vive head viee do not mach the correct position of FPS/FirstPersonCharacter camera,
I tried to recenter it manualy by addin a small chagne in steam vr_camera.cs
but it does not anything
how to add steam vr (vive) to FPS unity 5.4