There are many posts over on vb.com dealing with running a query to change 'guest' posts back to user posts. They have step-by-step instructions over there.
And I just wanted to confirm that there is no way to restore a deleted user? And that you have to recreate the user then use the suggested steps to transfer the post count to recreated user?
I just wanted be sure before I attempted it. If someone could let me know I sure would appreciate it.