Importing swf at defined size

First off all hy to all.
I’m new in macromedia flash. i made a web site using one of kirupa tutorial (Creating a full flash web site).
I did that www.clanflc.evolink.ro but i got one question.

i want to load a flash movie in my site that has width 600 and height 400 and i need this flash movie imported at this size 900 x 500.

my question is if there is posible what i want (and how)?