D3D Device creation fails becasue I switched to VC++ 7 (.NET)

Hi,

I am using VC++ .NET and i wrote this program while using VC++ 6. It still works fine on my one machine that has VC++ 6. But when i try to run my code in VC++ .NET the CreateDevice() function in directx function fails. I have not changed the code at all. I'm still new to D3D but I am wondring if theres anyhting wrong withthe way i'm initilizing it. I'm using April 2005 directx sdk and under win xp with VC++ .NET.

Heres my D3d initilaize function. The code fails at the g_pD3D->CreateDevice(...) call at the end there.

Code:

---

HRESULT InitializeD3D(HWND hWnd)
{
        UINT nWidth = 800;
        UINT nHeight= 600;

    //First of all, create the main D3D object. If it is created successfully we
    //should get a pointer to an IDirect3D8 interface.
    g_pD3D = Direct3DCreate9(D3D_SDK_VERSION);
    if(g_pD3D == NULL)
    {
        return E_FAIL;
    }

    //Get the current display mode
    D3DDISPLAYMODE d3ddm;

        d3ddm.Format = CheckDisplayMode(nWidth, nHeight, 32);
        if(d3ddm.Format != D3DFMT_UNKNOWN)
        {
                //Width x Height x 32bit has been selected
                d3ddm.Width = nWidth;
                d3ddm.Height = nHeight;
        }
        else
        {
                d3ddm.Format = CheckDisplayMode(nWidth, nHeight, 16);
                if(d3ddm.Format != D3DFMT_UNKNOWN)
                {
            //Width x Height x 16bit has been selected
                        d3ddm.Width = nWidth;
                        d3ddm.Height = nHeight;
                }
        else
                {
            return E_FAIL;
        }
        }

    //Create a structure to hold the settings for our device
    D3DPRESENT_PARAMETERS d3dpp;
    ZeroMemory(&d3dpp, sizeof(d3dpp));

    //Fill the structure.
    //We want our program to be windowed, and set the back buffer to a format
    //that matches our current display mode
        d3dpp.Windowed = FALSE;
    d3dpp.BackBufferCount = 1;
    d3dpp.BackBufferFormat = d3ddm.Format;
    d3dpp.BackBufferWidth = d3ddm.Width;
    d3dpp.BackBufferHeight = d3ddm.Height;
    d3dpp.hDeviceWindow = hWnd;
    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
        d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
    d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_ONE;

        //Select the best depth buffer, select 32, 24 or 16 bit
    if(g_pD3D->CheckDeviceFormat(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, d3ddm.Format, D3DUSAGE_DEPTHSTENCIL, D3DRTYPE_SURFACE, D3DFMT_D32) == D3D_OK)
        {
        d3dpp.AutoDepthStencilFormat = D3DFMT_D32;
        d3dpp.EnableAutoDepthStencil = TRUE;

    }
    else if(g_pD3D->CheckDeviceFormat(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, d3ddm.Format, D3DUSAGE_DEPTHSTENCIL, D3DRTYPE_SURFACE, D3DFMT_D24X8) == D3D_OK)
    {
                d3dpp.AutoDepthStencilFormat = D3DFMT_D24X8;
        d3dpp.EnableAutoDepthStencil = TRUE;

        }
    else if(g_pD3D->CheckDeviceFormat(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, d3ddm.Format, D3DUSAGE_DEPTHSTENCIL, D3DRTYPE_SURFACE, D3DFMT_D16) == D3D_OK)
    {
                d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
        d3dpp.EnableAutoDepthStencil = TRUE;

        }
    else
        {
        d3dpp.EnableAutoDepthStencil = FALSE;
        }

    //Create a Direct3D device.
    if(FAILED(g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd,
                                  D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_pD3DDevice)))
    {
        return E_FAIL;
    }

---

Is there somthing I overlooked when i switched to .NET or is there something wrong with my initilization of D3D?

Thanx in advance,
Boomba,