As I'm reading post about basic of buttons, will need some time to understand everything that is written on that post.
I will take a look later into LFSLapper.lpr and changes.txt files
Don't have as much free time. :|
After some trying i will post my success or failure.
When I will have done everything you suggested to me. I will post rough mock-up image of the drift scoreboard GUI, so i could understand more about programming.
Thank you for you'r answer!