dumbquestion

I dont know if this is even possible, but given theres multiple people in credits of certain maps, I'm just asking to see if its possible, and if so, how?

I've seen just about every thread about how to make water properly; looking at valve's website, ALL THE TUTORIALS, and still nothing, I have this unending problem, that whenever I try to put in water, it shows the skybox instead of the water texture. I don't have any leaks. What do?