I've got an old institucional website using a proprietary CMS (which sucks) built using asp.net. Now we need to use a better CMS with it, and our weapon of choice was Umbraco.
Assuming the possibility of compability between Umbraco, and the website framework, seemed to be the best choice.
So, what is the job?
Get all those files (.asp. .html, .css, .js) and make it work with Umbraco.
That is it.