Well, I'm about to post an open source cruise insim app soon in the forums, and I'll try not to forget to send you a pm when I do so. It is made from LFS_External and it's (surprisignly, knowing who has made it) really stable. But it's kind of basic too. I don't remember if it even saves the stats in to a database, but I guess it does, cause I saw my dbProccess file when I last looked in the directory.
And it's one of my latest C# applications, so it has the most of my C# knowledge. But honestly, it's still very lame, cause I never learned C# right, I just know my way around things.. You know, like when there's a shortcut, but you take the freeway, cause it's safer and you know you won't get lost.