[Marco van Herwaarden]

You are screwed.

You can not restore just 1 user.

The best you can do is:
- Create a new user for him and setup as usual. Make a note of the new userid.
- Run the following queries to bring back the threads and posts to his new acount (create backup before doing so!!!!!), replacing the correct username and userid (this assumes you will reregister him with the same name):

SQL Query: (how to run queries)
UPDATE post set userid = NEW_USERID WHERE username = 'OLD_USERNAME';


SQL Query: (how to run queries)
UPDATE thread set postuserid = NEW_USERID WHERE postusername = 'OLD_USERNAME';