Based on http://www.photoshopstar.com/web-graphics/professional-glossy-download-button/ I've attempted to create some download buttons.

I didn't have the Myriad Pro font, and I know the look isn't as swish as it could be, but it's an attempt that you can draw upon and tweak.

PS : Check out Buttons.css

The Buttons

Download

Demo

Preview

Source Code

The Code

Note : This comes from http://www.photoshopstar.com/web-graphics/professional-glossy-download-button/ 
<style type="text/css">
<!--
#button_download { margin: 0; padding: 0; }
#button_download a { display: block; background: url(./web/Button_Download_Red.png) no-repeat; width: 200px; height: 0px !important; height /**/:72px; padding: 72px 0 0 0; overflow: hidden; }
#button_download a:hover { background: url(./web/Button_Download_Red_Hover.png) no-repeat; width: 200px; height: 0px !important; height /**/:72px; padding: 72px 0 0 0; overflow: hidden; }
-->
</style>
 
<h1 id="button_download"><a href="./web/Download_Buttons_v1.zip" title="[244kb] Zip file with editable PSD and output web images" target="_blank">Download</a></h1>