MACROMEDIA STUDIO 8-EXPLORING STUDIO 8 Manual page 213

Export the image
After choosing your optimization settings, export the image as a JPEG file.
Select File > Export.
The filename listed has a .jpg extension. Fireworks chose this file format
because you selected it in the Optimize panel.
1.
Browse to the following folder on your hard disk:
local_sites/cafe_townsend/images/
2.
Ensure that the Save As Type (Windows) or Save As (Macintosh) pop-
up menu reads Images Only, and click Export.
The JPEG file is exported to the images folder.
Remember that the PNG file is your source file, or working file.
Although you exported your document in JPEG format, you also must
save the PNG file so that any changes you made will be reflected in the
source file too.
3. Select File > Save to save the changes to the PNG file.
View the exported image
Your banner graphic is done. Compare the JPEG file created during the
export process to the PNG file you worked on.
In Fireworks, select File > Open, browse to the images folder, and
double-click the banner_graphic.jpg file.
If the file doesn't appear in the images folder, select JPEG from the Files
of Type pop-up menu.
Export an optimized image file 213