Easiest way to create a custom language hilighter in VS2010?

I've been reading around, and all of the examples I've seen (including on MSDN) are incomplete or way over my head. Is there some easy way to create a cu开发者_StackOverflowstom language syntax hilighter for Visual Studio (as an add-in)? Basically, I just want my own filetypes to have syntax hilighting, I'm not looking to modify any of the existing color templates/languages.

Edit: I should mention that these files I want to colorize are part of an existing VB/C# project, so I can't create a new "language".