Developing a basic content management system in C#

Hi guys,

Dunno if this is the right place to post this but here goes.I am developing a website for a project and have to provide a basic working content management system for the admin so she can act as webmaster and update the site content e.g news and whatnot. I am using c#, visual studio 2005.
What i think i want is that the admin can enter text content in a textbox or something similar and this would then replace the text already in the news.aspx page of my site.Any help or point in the right direction would be fantastic.

Thanks