Thanks lads, but unfortunatelly I have no windows programming knowledge (I'm sticking to fpc and I try to avoid any windows related programming, that's why I decided to use sdl ). Anyway, I found a solution here dunno if it'll work on other systems than win32, it suits my current needs.

The code goes like this if anyone is intrested (it has to be put before SDL_Init

Code:
SDL_putenv('SDL_VIDEO_WINDOW_POS=10,10');
or to center sdl window (only window area, it doesn't counts in the size of caption and borders)

Code:
SDL_putenv('SDL_VIDEO_WINDOW_POS=center');
SDL_putenv('SDL_VIDEO_CENTERED=1');
I'll read forums more carefully next time :twisted: