I've bought an Arduino ISP. Know I want to intall the Drivers on my Windows 7 64bit computer. I downloaded the files from https://www.arduino.cc/en/uploads/Guide/ArduinoISP_WindowsDrivers.zip and then I want to install it in the device manager as shown in the "Getting started" instructions. Unfortunately the device manager says he doesn't find any Drivers in this folder. Then I try to install the arduinoisp.inf file directly but this also doesn't work. I have no more ideas and i didnt find anymore in google, pls help me.
I assume you mean the Arduino IDE (the Arduino development system). Perhaps it is referred to as ISP in Swiss but IDE is the usual english acronym and it may be helpful to edit your Title.
You really need a Driver otherwise it doesn't work. Only in Linux and Mac Os you don't need a Driver. I had also a Pc with linux but I can't install the newest Arduino IDE and in this one whos installed you can't choose The Arduino ISP