Problem with running a xlcd display code on dsPIC30F4011

Hi Every body.
I have a problem to Run(Display Character on LCD) my Code of xlcd (2x16) on dsPIC30f4011. i think my delay time is wrong but i dont know what is the Correct. can Somebody help me ?
My Code:
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#include <p30f4011.h>

#define F_OSC 10000000
#define PLL 8

#define DataPort PORTB
#define TRIS_DataPort TRISB

#define RS PORTEbits.RE0
#define RW PORTEbits.RE1
#define Enable PORTEbits.RE2
#define TRIS_RS TRISEbits.TRISE0
#define TRIS_RW TRISEbits.TRISE1
#define TRIS_Enable TRISEbits.TRISE2

#define Display_Clear 0b0000001
#define Return_Home 0b0000010
#define Dont_Shift 0b0000100
#define Right_Shift 0b0000111
#define Left_Shift 0b0000101
#define Display_on 0b0001110
#define Shift_Display_Left 0b0011100
#define Shift_Display_Right 0b0011000
#define Display_Dont_Shift 0b0000110
#define Set_Function_8Bits_2Lines_5x10 0b0111100
#define Set_Function_4Bits_2Lines_5x10 0b0101100


void delay5ms(void);
void delay15ms(void);
void delay200us(void);
void delay600ns(void);
void delay18TCY(void);
void Write_Cmd_LCD(unsigned char c);
void Write_Data_LCD(unsigned char c);
char Busy_Check(void);
void Open_LCD(void);
void SetDDRAM(void);
void Init_Program(void);
void Init_LCD(void);

void delay5ms(void)
{ unsigned long int i, x;
x = ((5 * 0.001)*(F_OSC*PLL))/4;
for (i=1;i<=x;i++);
}

void delay15ms(void)
{ unsigned long int i, x;
x = ((15 * 0.001)*(F_OSC*PLL))/4;
for (i=1;i<=x;i++);
}

void delay200us(void)
{ unsigned long int i, x;
x = ((0.0002)*(F_OSC*PLL))/4;
for (i=1;i<=x;i++);
}

void delay600ns(void)
{ unsigned long int i, x;
x = ((0.0000006)*(F_OSC*PLL))/4;
for (i=1;i<=x;i++);
}

void delay40us(void)
{ unsigned long int i, x;
x = ((0.0004)*(F_OSC*PLL))/4;
for (i=1;i<=x;i++);
}


void delay18TCY(void)
{
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
asm("NOP");
}

void Write_Cmd_LCD(unsigned char c)
{
RS = 0;
RW = 0;

delay18TCY();
Enable = 1;

DataPort = c;

delay18TCY();
Enable = 0;
delay18TCY();
}

void Write_Data_LCD(unsigned char c)
{
RS = 1;
RW = 0;
TRIS_DataPort = 0x00;
// delay18TCY();

// delay18TCY();

DataPort = c;

Enable = 1;
delay18TCY();
Enable = 0;

TRIS_DataPort = 0xFF;
RS = 0;
while(Busy_Check);
delay200us();
delay200us();

}

char Busy_Check(void)
{
TRIS_DataPort = 0xFF;

RW = 1;
RS = 0;
delay18TCY();
Enable = 1;
delay18TCY();

if (PORTBbits.RB7)
{
Enable = 0;
delay600ns();
return 1;
}
else
{
Enable = 0;
delay600ns();
return 0;
}
}
void Open_LCD(void)
{
delay15ms();

DataPort = 0x00;

RS = 0;
RW = 0;
Enable = 0;

TRIS_DataPort = 0x00;

TRIS_RS = 0;
TRIS_RW = 0;
TRIS_Enable = 0;

DataPort = 0x3C; // Function Set;
delay40us();
DataPort = 0x0F; // Display On;
delay40us();
DataPort = 0x01; // Clear Displaying
delay40us();
DataPort = 0x06; // Entry Mode;
delay15ms();

/* delay18TCY();
Enable = 0;
delay18TCY();
/**/
}
void SetDDRAM(void)
{
TRIS_DataPort = 0x00;

RS = 0;
RW = 0;

DataPort = 0x80;

Enable = 1;
delay18TCY();
Enable = 0;
delay200us();
}

void Init_Program(void)
{ //TRIS_DataPort = 0x00;

TRISB = TRISE = 0x00;
PORTB = PORTE = 0x00;

delay15ms();
DataPort = 0x3C; // Function Set;
delay5ms();
DataPort = 0x3C; // Function Set;
delay200us();
DataPort = 0x3C. // Function Set;

}

void Init_LCD(void)
{

Open_LCD();
while(Busy_Check() == 1 );
Write_Cmd_LCD(0x18);
while(Busy_Check() == 1 );
SetDDRAM();
while(Busy_Check()==1);
Write_Data_LCD('A');
while( Busy_Check() == 1 );

}

void main()
{
Init_Program();
Init_LCD();
}
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Exactly i need your Helping.
Thanks Alot.