I don't know how to do that... just exceeded my proficiency level! I used PHPMYADMIN to create the backup, but I don't really know how to do anything else with it.
It's all in the old wiki forums, too, all intact.
That said - did you do something? The tables and their content have reappeared. That helped with a lot of pages which are working now. [h] tags are not working though, and all images from the old install have been replaced by their attachment name and link to the image (so the images are there - the pages are just parsing them as links to the images).
Auto linking isn't working anywhere at all.
Anyhow, it's 3.15am here. I'll check in in the morning!