Loader not show

hi every one,
i’ve made a project in flashcs3 in which i’ve used 3ds max output in avi form,after imparting these avi in flash ,loader shows after 75% loading ,before that there is only a blank screen apear…what should i do in order to show it from 1% to 100%.in flash on 1st frame loader is there,on 2nd frame 3ds max avi ,on third frame rest all avi.:sigh: pls help me to solve this probs.