Why are my subtitles going further than my screen

Since i heard bsplayer was the best to play back divx, i installed it and tried it with some subtitles
But now when i watch a movie, my subtitle (when the person in the movie says a lot) comes only in one line so the sentence is too long and can't fit on the screen
it would be acceptable if the title would split and go further on the next line but the text seems to overwrite itself so i can't read what i says

Can somebody help me please?
I hope there is a solution to my problem

Thanks alot