I install a stayle that .......

Hi:
I install a stayle that recommit upload its image to image/stayle/........
when i do this my style in forum changed but my portal (vba) is not changed!!
i think the image directory is not known by vbadvance,now i want change image diregtori in vba ,how can i do this?
in other hand,how can i change default image directory that used by vba?
thanks for your help.