directSound problems (beginners question)

Hi

I'm trying to make use of directsound in a .Net project. I haven't much experience with c# so bare over with me.

I have borrowed some code found on the net that I'm trying to merge into my own little project to get a soft start. I'm already failing to initialize the directsound device. Here is what I have:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

using Microsoft.DirectX.DirectSound;
using DS = Microsoft.DirectX.DirectSound;

namespace AudioProcessor
{

    public class SoundSetup
    {
        private DS.Device sounddevice;
        private SecondaryBuffer shotsound;
   
        public void InitDxSound()
        {
            sounddevice = new DS.Device();
            sounddevice.SetCooperativeLevel(this, CooperativeLevel.Priority);

        }
     }
   
    static class Program
    {
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
           
        }
    }
}


 I get the following errors:

Error    1    The best overloaded method match for 'Microsoft.DirectX.DirectSound.Device.SetCooperativeLevel(System.IntPtr, Microsoft.DirectX.DirectSound.CooperativeLevel)' has some invalid arguments   
Error    2    Argument '1': cannot convert from 'AudioProcessor.SoundSetup' to 'System.IntPtr'   

Can someone please tell me how to resolve this (I suspect that this has to do with the use of "this")?

Best Regards
Thomas