Alright, I kinda skimmed over the Moving Servers thread.. I don't want to change servers, just from one directory to another on the same server.
Can I just move all of the files over and update the paths in the admin panel? Or do I have to re-install it?
Just move it, and use repair_settings.php, etc. to update the paths and URLs.
-[Unknown]
Where can I get repair_settings.php?
http://www.simplemachines.org/community/index.php?action=search
Try that... and enter repair_settings
In the future, you can use that to find the answer to many other questions as well.