Comments

PeterWright wrote on 11/20/2004, 6:14 PM
Assuming Fireworks produces a file with an alpha channel, you may have to turn it on in Event Properties.

Otherwise you can try Chroma Key to remove the white.
jmeredith wrote on 11/20/2004, 6:44 PM
What format did you save the file to while in Fireworks?

"A PNG can support up to 32-bit color, can contain transparency or an alpha channel, and can be progressive." (From the Help menu) - this is the option I use.