.NET FileTime Struct Revisited

On my old blog, I wrote about the problems with the .NET FileTime struct and gave an approach to working around them. Since then, a couple of people have sent me Spaces messages suggesting a way to simplify at least a portion of my solution. Unfortunately, because of all of the recent changes on Spaces, and because I do not check my old space on anything like a regular basis, I have "misplaced" those messages. If anyone having problems with FileTime lands here with improvements to share, please do so and I will follow up ASAP. Thanks!