Check my code plz?

The first problem is that you're declaring variables twice:

int ledpinFour = 2;    
int ledpinFive = 3;
int ledpinFour = 4;    
int ledpinFive = 6;
int ledpinFour = 5;    
int ledpinFive = 6;

You can only have one called "ledpinFour" or "ledpinFive".

The error "conflicting types for ledVizOne" is because you need a function prototype at the top of your code. (This won't be necessary in Arduino 0004). That is, you'll need something like this:

void ledVizOne();

for each of your functions.