I found this slick little app a few years ago, and it looks like it's still around. Count your VC# and VC+ lines, and it differentiates between code lines, blank lines, designer lines, etc, which is nice. The downside: it's really only useful for VC# and VC+ projects, which is alright if that's all you are working with. Check it out.

C#, Visual Basic and C++ .NET Line Count Utility - The Code Project - .NET

PS. You'll note that I didn't mention it worked on VB stuff. Well that's because VB isn't a real programming language :P