I can't recall seeing one myself but there probably is somewhere around the place
But yeah, I use 2008 ( upgraded before 2010 was out and while I had a credit card rofl ) so at least Im somewhat up to date rofl. I used it for the same reason but the intellisense that comes with the notepad++ posting on these forums somewhere helps me at least remember most of the functions without looking them up so nice practice at least.
This might eventually lead you to what you want though
http://www.wowwiki.com/Lua_editors/Visual_Studio