Wrong World2Screen Calculation

D3DXVECTOR3 *World2Screen(LPDIRECT3DDEVICE9 pDevice, D3DXVECTOR3 &vScreenCoord, D3DXVECTOR3 vEnemy)
{
	if( !pDevice ) return NULL;

	D3DXMATRIX matProj;
	float fAspect = (float)(1280) / 720;
	D3DXMatrixPerspectiveFovRH(&matProj, (float)(D3DX_PI/180*90), fAspect, 0.1, -1);
	
	float *pX = (float*)(*(DWORD*)(Base)+0x60);
	float *pY = (float*)(*(DWORD*)(Base)+0x68);
	float *pZ = (float*)(*(DWORD*)(Base)+0x64);
	float *pitch = (float*)(*(DWORD*)(Base)+0x6C);
	float *yaw = (float*)(*(DWORD*)(Base)+0x70);

	D3DXVECTOR3 vEye ( *pX, *pY, *pZ);
	D3DXVECTOR3 vTarget ( *pX + *yaw, *pY + (*pitch * -1), *pZ);
	D3DXVECTOR3 vUp ( 0, 0, 1 );
	D3DXMATRIX matView;
	D3DXMatrixLookAtRH( &matView, &vEye, &vTarget, &vUp);

	D3DVIEWPORT9 viewPort;
	D3DXMATRIX identity;

	pDevice->GetViewport( &viewPort );
	D3DXMatrixIdentity( &identity );

	D3DXVec3Project(&vScreenCoord, &vEnemy, &viewPort, &matProj, &matView, &identity );

	if(vScreenCoord.z < 1)
		return &vScreenCoord;

	return NULL;
}