I need a program that evaluates a wind sensor
It should evaluate the pulse signal from the wind sensor
which input pin do I have to use
can someone help me with the program
I have to determine the time between two rising edges of the signal (time in ms) in an integer
You can use whatever pin you want. I would suggest looking at the example "StateChangeDetection" to see how you can detect when a pin changes state. It sounds like that is what you want. When that happens, record the time of that event. When it happens again record that time as well and calculate the difference.
You can also look at the pulseIn() command which may do what you want.
It sounds like you might be new to all this so download the IDE and take some time to look at all the samples that come with it and learn them.
Any pin - as long as the voltage of the pulse is high enough to register as high/low signal and not high enough to damage the Arduino.