If you’re running Windows Vista, Adobe Dreamweaver CS3 and want syntax highlighting/coloring for Smarty template engines, this will work:
http://smarty.incutio.com/?page=ConfiguringDreamweaver

My own notes:
-In Vista, the folder you want to look for is:

C:\Users\<user>\AppData\Roaming\Adobe\Dreamweaver 9\Configuration\CodeColoring

-The Smarty scheme should come before the scheme segment for HTML. I put it just after the ‘Text’ one.

-This solution is not perfect, the closing braces } often get coloured incorrectly.. Am working on perfecting it, will update when I have a better version.