I was given ArcMap toolbar and tool engine files without instructions on how to install but the code was done by someone else and it should work. How do I install it in ArcMap 10? I attempted to add the tool by going to customize->toolbar->customize->new and add files, but it wouldn't take the dll files in my directory. Is there another file type it is supposed to take? Or do I need to go through some kind of workaround in VS? I haven't installed ArcMap dev on my version of VS.