You'll need at least Netscape 4.0 or Internet Explorer 4.0 to use
BILT. You can go to either the Netscape
site; they will tell you what version you are currently using. If
it is lower than 4.0, you'll need to download a higher (free) version
from their site.
To experience all the effects, you'll need the Shockwave Flash plug-in,
a free application that enhances your browser and makes this site
interactive. If you can see the animation below