Moving wordpress from an expired domain name to a new domain name on a new server.

I had a full blown blog on a domain that expired and someone else bought. How can I move this site to a new domain on a new server when I don't have access to that original domain anymore?

I've tried cloning the files over and importing the database, but the page is just blank when I load it, not sure how I can test this situation to see where the issue is..