I cant see video picture because of my resolution?!

[cska133]

I played my AVIs and Divx with other softwares like Divx Player or Ridlight but I want to play them with subtitles so I found that BsPlayer can do this.
I installed it , I get sount and the subtitles are playing but thre is no picture... I tryed changing the BSPlayer settings but no success till I changed the video resolution, making it less ... and it came the video picture.
But this is not the real solution because I dont want to reduce my PC resolution or I cant reduce it every time I play viodeo. Also there were no such problems playing the AVIs with the other players.
So it should be something...

can someone help me please...

I have Win XP Pro , SP2
Divx and Xvid codecs I have already