MI4, drivers & Win7 - Does not work!

I’ve been wanting a small usb interface to take to school with me.
I just picked up an MI4 at the local pawn shop.
When I went on the website to register my interface it’s not in the list of products.
I googled the model number and found a page with drivers for Win 7 but I can see people have had some issues trying the 64 bit vista drivers.
Has anyone here got this working?
How did you wind up configuring it?
This is my first Steinberg product.