Website too slow

1

I made a website all in flash. The website has a preloader. the problem is that it takes kinda long for it to load. Is there a way for the movie to be loaded faster? Also, since the website is one flash swf, and not mulitiple html pages, the back button in internet explorer (or any browser) takes the viewer to the previous website. I want it to that the back button in internet explorer goes to the first frame. Is there a way to do this? Thanks!!!