CAA: Christian Anime Alliance

what does a .MDI file open with? There is a student i was trying to help that was trying to open one but we couldn't open it with any program we had here at the college. I was trying to figure it out but I couldn't maybe you guys can help me out?

What were you expecting it to be?

http://filext.com/file-extension/MDI

I know but it wouldn't open with office for some reason. or any other program that's why I asked..