Man you are old, you were already 4 years old when I was born. I just started learning a month ago, so I guess I've lost my mind too (well actually there's no guessing in my case, the vote is in, I lost it a long, long time ago.) Seriously though, while it's not a snap to learn the violin, it is something you can do. Since you can probably already read the treble clef, you're starting out ahead of where a lot of people start. Just watch the Fiddlerman videos and get some books like the Essential Elements for Strings (violin version) Book 1, or some other books for beginners and have at it. I'd imagine you can be playing Amazing Grace pretty well in a week or so.  Let us know how it goes.