Cubase 4 on Mac

I have Cubase 4, with the MI4 box, which I got a long time ago together with a rather expensive microphone, and used on my old Mac. Now I’ve found myself a band, and would like to be able to use it again. Is this hopeless?

I know it’s pretty old software, but I feel a bit cheated if I won’t be able to use my microphone because my Cubase version is considered outdated. Do you think there’s any chance of getting Cubase 4 to work on a modern Mac? If not, can I use the MI4 with newer versions of Cubase?