Creating carsets..

I have made many different car and seasonsets using many different editors.
My problem is that I dont know whitch files those editors change. I would like to backup and save my sets but dont know whitch files and dont want to backup whole gp4 directory every time I make new set..!

Can somebody help me and tell me in whitch file is:

- Driver and team names (GP4.exe?)
- External cockpits graphics like driver hands
- Points you get when you win the race

I also would like to create carset installers so if somebody knows a wad-editor that can be run from commandline, please tell me..

Also is it possible to change number of cars, forexample this year f1 has only 20 cars and gp4 22.

Thank you if you can help me. I will post those sets hear if I can make installers for them..