Thanks Mister_e!
The blink.pbp works with my 12F629 with pin 7 as output which is ok for me.

Leaves one problem: I want to make for example pin 7 (GP0) output and pin 2 (GP5) Digital Input for frequency measure purposes. The program will switch the LED on when the input gets a lower than specified frequency . The program is no problem, just the PIN order.

So theres one thing I see: I have to concentrate on a very small Number of different Pics to get used to them. My favorites: 12F629, 16F628A, 16F876A. That should do for the next years or so. Iīve learned the old school "two transistor 6-18V circuits" when I was 14. Thats 30 years ago. Now Iīm wriggling around sportscar engines and some electronics knowledge comes in handy you know.