[Nemesis]

This can be tricky, id suggest keeping your other site working untill your for sure everythign works on the other. Though that can cause some data loss to your members. I don't know off hands what files you'll need to change, prolly config but yes the script upon installation asked you for the domain and sub directory so where ever it used that information thats where you will need to change it. One way would be to go through each file and search for the old domain and over right it with the new one. back up your site case nothing else works, and wait for a devs response mines probably not too good but i tried lol.