WCF/WF - How to use WF in web application

Dear All,

I am using Visual Web Developer 2008 Express Edition.

I would like to know Is it possible to use Window Workfolw Features to build web application that requires approval and rejection features.

Please suggest some good links

Thanks

check the following link
it shows an  open source where in workflow and web appn framework tied up
http://www.thousandtyone.com/blog/CruxOpenSourceWorkflowEngineAndWebApplicationFrameworkBuiltOnNET.aspx