I Am Confused

Hello Flashkit,

Here is my dilemma...
I have an intro for a movie. It is a swf that is 1.5 mb. It takes too long to load, and I'm using a T1 connection. The swf is 30 sec long. I have visited sites before where the intro movie is much longer than that, yet it only takes a sec to download. What can I do, to overcome this problem, and issues like this in the future.
Thanks for any help available...