How to create command line shortcut with shell api?

Hi,

I want to create a shortcut with shell API. But when I double clicked the
shortcut, windows prompt "Can't find default.htm, perhaps it was removed."
I can make sure the path is correct. And after I made some very small change
to the short, such as add a space in start location, the shortcut worked
properly. How to fix my code ? Thanks in advanced.

Here is my code:
    IShellLink* psl;

    hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
IID_IShellLink, (LPVOID*)&psl);
    if (SUCCEEDED(hres))
    {
        IPersistFile* ppf;

       psl->SetPath("\"C:\Program Files\Internet Explorer\iexplore.exe\"
d:\\webpos\\default.htm");
       psl->SetWorkingDirectory("D:\\webpos");

        psl->SetDescription(cpDesc);
        hres = psl->QueryInterface(IID_IPersistFile, (LPVOID*)&ppf);

        if (SUCCEEDED(hres))
        {
           char cpDesktop[MAX_PATH] = {0};
           SHGetSpecialFolderPath(NULL, cpDesktop, CSIDL_DESKTOPDIRECTORY,
FALSE);

           _bstr_t bstrLnk(cpDesktop);
           bstrLnk += "\\";
           bstrLnk += szLnkName;
           hres = ppf->Save(bstrLnk, TRUE);
           ppf->Release();
        }
        psl->Release();
    }