Noob need help for platformer

I need multiple things for my game…
** I cant make my main image have a clear background after I imported my image.
** I can’t make my character die when he hits the water and it then restarts (I would prefer that they had lives but i don’t know how to do that either)
** I can’t make the enemies kill my main character when they walk in to him
** I can’t get the screen to follow my character

I want all this using my engine:
http://www.kirupa.com/forum/attachm…tid=10360&stc=1
thats the link for my engine
Help would be greatly appreciated (especially if you edit mi engine and send it back zipped, of course) I am a true blue NOOB.
Thnx in advance…

I AM DESPERATE