How do I move files to keep the same posts, members, etc., keep the same host, but move to a different site?
use the backup in the admin cp :\
What do you do after you have the backup?
change to where ever then install the backup .
I don't understand what you meant in that post.
Change cookie details and board URL if necessary.
Backup all files and database.
Upload files to new host.
Install MyBB with those.
Go into phpMyAdmin, choose your database from the list on the left, select all the tables, from the menu at the bottom that says 'With Selected' choose drop, import your backup.