Since I had a lot of useful help above, I wanted to pay it back with a summary of what I did in case it might help anyone else.
Summary of problem - the server ubbthreads directory was overwritten with a copy of the old install directory in effect wiping out everything on the server. The database was fine and untoucher.
- I downloaded the current install zip file
- Installed the current version using a different database name
- Changed the database name in the config.php file in the include directory to point back to the original database
- Logged in and ran all the rebuild scripts
- Went though all the contral panel settings to set them to what I had before
- Reinstalled all the style wrappers
I thank everyone who helped get back in operation with no loss of data or members.