Hi
This might give you heads-up on creating an MVC application with partial view.
http://www.dotnetfunda.com/articles/show/1831/how-to-create-partial-views-mvc-tutorial-number-10
On click of submit button, u can make db call to store the data in PackageHed & to PackageDet. Else have a storedproc and make the storedproc do the data insertion. Just make sure you update data in PackageHed before adding data into PackageDet.
Hope this helps
Seth Hop