How to create a DLL with C++.NET that can be used in VB.NET

Ok. I have this class written in C++.  I want to use it in a VB.NET project.  I need to know how to make this class into a DLL that can be used in VB.NET.  I have included the header file for my class.  I have read that the class must be "Managed" and being new to the .NET Enviroment, am having diffulty transforming my thinking to this new methodology.  I understand the basic concept behind it, but haven't quite grasped it totally, yet.  

If someone could help me get this into a DLL it would be quite helpful.  

Here is my header file:
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//=========================================================== INCLUDES
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <math.h>

//========================================================= DEFINITIONS
#define pi       3.141593
#define twopi    ( 2.0*pi )
#define qrtrpi   ( pi/4.0 )
#define halfpi   ( pi/2.0 )

//===================================================== DEFINE NEW TYPES
struct pt {
      double z;
      double x;
};

struct surface {
      pt beg;
      pt end;
      pt cnt;
};

struct sCARLOS {
      surface s1;
      surface s2;
      surface s3;
      surface s4;
      surface s5;
      surface s6;
      surface s7;
      surface s8;
      surface s9;
      surface s10;

      // dynamic array
      pt *sting_res;
      int sting_pts;
};

struct sEMU {
      // dynamic arrays
      pt *s1;
      pt *s2;
      pt *s3;
      pt *s4;
      pt *s5;
      pt *s6;
      pt *s7;
      pt *s8;
      pt *s9;
      pt *s10;      

      // keep track of number of dynamic pts
      int s1_pts;
      int s2_pts;
      int s3_pts;
      int s4_pts;
      int s5_pts;
      int s6_pts;
      int s7_pts;
      int s8_pts;
      int s9_pts;
      int s10_pts;
};

//====================================================== CLASS DEFINITION
class ParametricWedge {
private:
      double WedgeAngle;            // degrees
      double WedgeLength;             // inches
      double Freq;                       // GHz
      double TailRadii;                // inches
      double BodyExt;                     // wavelengths
      int    Resolution;                 // pts per wavelength

      sEMU    EMU;
        sCARLOS CARLOS;

public:
      ParametricWedge();
      ParametricWedge(double Angle, double Length, double Freq, double Radii, double Body, int Res);
      ~ParametricWedge();
      void UpdateWedgeParams(double Angle, double Length, double Freq, double Radii, double Body, int Res);      
      void MakeWedge(double Angle, double Length, double Freq, double Radii, double Body, int Res);
      void MakeWedge();
      
public: //============================================== OVERLOADED MEMBERS
      double   GetWedgeAngle() { return WedgeAngle; }
      double   GetWedgeLength() { return WedgeLength; }
      double   GetFreq() { return Freq; }
      double   GetTailRadii() { return TailRadii; }
      double   GetBodyExt() { return BodyExt; }
      int      GetResolution() { return Resolution; }
      sEMU*    GetEMU() { return &EMU; }
      sCARLOS* GetCARLOS() { return &CARLOS; }

private:
      int OddNum(int val) { return val & 1; }      

};
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Thanks for taking a look at it... Don