First of all your flash movie has to have actionscript embeded in it which will ether auto take them to a site after the intro ( I can tell u how thats done ) or having btn there which will take the to your site... upload your .swf and your .html for your flash in any placeof your site and have your url redirecting there..... you can redirect your site from yourdomain.com/cpanel if thats what you using.....
Let me know if u needmore help
greets Breez