Once you have downloaded and decompressed the ZIP file, use the following steps to install the style in Fireworks CS3.

1. Open Fireworks CS3 and display the Styles panel.

Note: You can find the Styles panel by choosing Window > Styles if it is not already visible. 

2. Click the options icon in the top right corner of the Styles panel and choose Import Styles. 

3. Select the Style file (STL) and click OK to import it.
 
Once imported, your styles will appear in the Styles panel, displaying a thumbnail for each imported style.
