Newbie and learning

Hello All, I have been reading and digesting information from this list for about two weeks now. I am doing some work and testing (both) and learning php on the way. Now I have seen several replies about using $_GET[] and $_POST[] and that if you ARE sending variables using the URL you _should_ use $_GET[] whereas if you are _not_ passing variables in the URL you should use $_POST[]. Is this correct? I just want to make sure I have it in my mind so that when I start passing info via url I use the right method. I ask this because I have a friend that wants to have me setup an e-commerce site for him. I am trying to decide if I should use ASP (gasp) or PHP (yeah). It will be a db driven site which will have images in the db and probably multiple tables with inner and outer joins and search systems. Yes, I have the 4000+ (pdf) page manual on my system and refer to it and read sections of it at a time (chunk). And I hope that I will be able to answer most of my own questions there or in other resources before I have to submit to the list. Thanks. Larry R. Sieting