I want to include the current time and date in a .net application so I can include it in the start up log to show the user what version they have. Is it possible to retrieve
You could use PostSharp to weave in the date immediately post-build. PostSharp comes with a lightweight aspect-oriented programming library, but it can be extended to weave in anything you need in a wide variety of ways. It works at the IL level, but the API abstracts you a bit from that.
http://www.postsharp.org/