> any recommendations?
Humm, subscribe to the magazine ?
Seriously, HTTrack is not the best tool to grab err, 
hum, "image sites", especially protected ones (often using 
javascript, form based authentication and/or multiple 
cookies). I can not recommand any tool, however, as my 
primary purpose is generally to backup (or make mirror 
of) "regular" sites with no real protection tricks or 
authentication schemes.