by Ken Task.
Ok, so yeah ... kinda ... somehow I got the impression you had a 1.7.x version and that was your starting point. Now I think I understand you are starting with a backup of 1.6.x. Is that correct?
The backup that you have ... does it include a data directory, an SQL dump (.sql file), and a directory for the code at the time of that backup? Makes a difference in what directions I'll suggest.
Ken