Similar like Sharepoint WF,I want to create it in Visual studio using WWF.like Aproval-Reject Flow throgh WWF,Send mail or notification update(Approve or Reject )should enter in SQL table.

I want to develop an application of Windows workflow in asp.net,similar like SharePoint workflow,Like in sharePoint, Task history is maintain in which Task assign,task Progress all values are maintain same as i want that windows workflow values should maintain in SQL table, ""Take one scenario I create one simple WF in asp.net using WWF,then it should assign user some task then this update should enter in SQL table,after that person approve or reject that workflow changes should update in SQL table"". Please provide me some solutions or any practical examples of WWF or Links..