For resetting passwork for Playstation Network look here
http://playstation.custhelp.com/cgi-...hp?p_faqid=492
Trophys are a system similair to the acheivments for Xbox. As games come out they will support trophies and you will get them for something ingame e.g. in a racing game it may be winning a certain race. These are then worth points that add to your level and as you collect more you will level up