rescuing a tank. please help!

[copenhagen_cowboy@live.co]

i am rescuing a tank from a friend of the family. She knows nothing about it other than she has killed some of the corals that were in it and there are four fish in it. It is covered in a green algae at the moment.I am wondering if anyone can tell me what kind of fish these are and what kind of corals are there. I also would appreciate any suggestions to help get this back on track. i get it in a couple days so i will post more pictures at that point but this is what i have at the moment (not much i know). i will post the water results when i get them
thank you all for your help.two of the fish look like the same ones and the orange,white and black fish burrows and hides in the sand.