How you showcase your portfolio is very important for any freelancer or design company. It reflects the way you do business, your attention to details and gives an overall feel of professional work. It can mean the difference from getting or losing clients.
Here are some resources you can try. They all use XML and ActionScript and are fully customizable.
Youblisher turns Pdf files into online magazines complete with page-turning effects. The documents you upload to your Youblisher account can be embedded into your blog or website.