Reinstall former drupal site to new domain

I want to put an old drupal site that I had back live but on a different domain name. Before taking the drupal site in question offline, I copied all files from the server. Obviously you can't just drag and drop all the previous files to the new directory and expect them to work. I need someone familiar with drupal to handle this. If I had the spare couple of hours this task takes I would handle it myself but... I don't. Looking to get this done right away. Thanks.