There are a number of articles on encrypting configuration information for ASP.NET (eg. an article by Scott Michelle (an authority in security)) using aspnet_regiis (pe or pef switches) or in code using DPAPI.
Although almost same principles apply, not much I believe is written for windows so since Job Galloway wrote a post recently on encrypting configuration information for a windows application I figured it's a good note to have and share. Let's make the digital world a safer place.