The Fireworks interface is set up to make accessing the tools quick and intuitive. When you start Fireworks, you'll notice that it doesn't create a new document automatically — instead, you see something
If you don't want the Start Page to show up every time you launch Fireworks, click the Don't Show Again check box at the bottom-left corner of the page.
To create a new Fireworks file (called a PNG file), just follow these steps:
1. Choose File --> New, or click the Fireworks File link on the Start Page.
The New Document dialog box appears.
2. Choose the canvas size for your document.
The default width and height are 500 pixels, and the default resolution is 72 pixels per inch. You can enter your own size in the fields provided and change the unit of measurement by selecting one from the drop-down list. You should leave the resolution at 72 pixels per inch unless you're designing for some medium other than the Web, like print.