you can go to ea's website at <A HREF="http://tigerwoods2003.ea.com" target="_new">http://tigerwoods2003.ea.com</A> and download it there. or <A HREF="http://www.fileshack.com" target="_new">http://www.fileshack.com</A> which I think is the best place to get demos.
The graphical improvement is amazing to me. The ball physics, pretty much everything. Play it and you will know what I'm talking about.
I just bought the retail version today. Goes to show you how much I love this game...I usually download games.
Great stuff!