How to Move Forum to another site/server ?

[FCDobbs]

I have a forum running 3.8.4, with a database of 385MB (extracted).

I took a backup of the database (via the AdminCP) to an .sql file (385MB).
I copied all the vBulletin folders and files to my harddrive.

I need to change hosting/server, so I arranged for that.

I then use Plesk to create a new MYsql database.
I then used the Sql PhpAdmin facility to IMPORT the data from my exported .sql file to the database.
Apart from the fact that I had to physically break the .sql file into many pieces, because the total was just too large to accomplish in one pass.
So I broke the file up (using a text editor) into about 12 pieces, and then imported each of them. This all finished successfully.
I can now look at the database (via Plesk PhpAdmin)... all the tables are there,
and they all seem to have the correct number of records.

I then FTP over all my backup vBulletin files/folders to the new server.
Again, successful.

So when I try to visit the site, I see there are no forums displayed... but I do have 30 of them in the database.
Also, when I login as Administrator, I do not see anything of value in the "Options" "drop-down" list. And all the "Administrator" items don't exist either.
I didn't bother to look at any other items... I just know something is WRONG.

What did I do wrong ?

What should I do to fix things?

Thanks for any and all help.