If I follow you.
You desire to install a clean copy of ubb but preserve the site?

I assume you think you may have some modifications causing issue?

A little difficult or I should say tedious. Especially if you have not done it before. because there are several screwball files that need to be kept. Like your gallery and upload folders.
The first step would be download the same version you were using.
Then ftp that up to your new site using the upgrade docs as a guide for what files to upload. just don't run the install or upgrade script.

Don't forget you also will need to create a db and user for the db ad upload your db data.

Again using the guide upload your backup files to the folders you skipped for the first step. But review them before you do.
There are several more file folders to check but that is a start.
I would try a test board first.
But that meas you need to edit the paths in the config.inc.php file because you are on a different location. But you need to do that anyway for the real board..
The sessions folder you don't need to worry about backup files because it is like a cache folder they get created and
deleted by themselves.

Now the real easy way would be to upload your backup. Edit your config.inc.php file for new paths.
Then upload per the upgrade docs just the files of the same version.
But if you have extra files you don't want scattered all over the place it will be hard to find them.


Blue Man Group
There is no such thing as stupid questions. Just stupid answers