Flash Video!! HELP!!!!

I am updating my website with new videos and wanted to have flash video. However, I want the video to start playing the moment you click on it (instead of waiting for the entire video to load and then playing). I'm not making the entire site flash, just the video and am embedding it in Dreamweaver. Any help?? I know how to put the flv files onto the site, but it acts funny and takes forever to load once it's on the web