Difficulty in playing .flv videos in Flash 8

[FONT=Verdana]I have recently converted three videos (each about 4 minutes long) from .mov to .flv. in order to play them in Flash. However, I can’t get them to play in Flash 8 Professional. I followed the instructions in Flash help and imported the video into Flash using the Video Import Wizard. I tried using each of the four deployment options starting with “Progressive download from a web server.” In my video folder I end up with three files for a video, a Flash Video File (with FLV in the upper left corner), a Flash Movie File, a Flash Document file, and a ClearOverPlayMute Flash Movie file. However, when I open any of the files (including the movie files) and click on Test Movie, the video doesn’t play. I would appreciate it if anybody could let me know what I am doing wrong.[/FONT]