Switched Servers, Please Help :)

I recently switched servers, and before I did, I download all the contents of my server so I could reinstate it on a new website. 

I upgraded to elgg 1.7.8 on my new server, and now I would like to get all of my members back. How do I do this? I uploaded all of the stuff in my datafolder, but it doesn't seem to show on the site. Any help would be much much appreciated!