How do I set the default location to "My Computer" when using the
GetOpenFileName call?

I have tried the following but CSIDL_DRIVES doesn't appear to work.  Any
ideas?
   
 WCHAR szFile[260] = _T("text.txt");
 WCHAR szPath[MAX_PATH] = _T("");
 LPITEMIDLIST pidl;
 HRESULT hr = SHGetSpecialFolderLocation(NULL, CSIDL_DRIVES, &pidl);
 if(SUCCEEDED(hr))
   SHGetPathFromIDList(pidl, szPath);

 ZeroMemory(&ofn, sizeof(OPENFILENAME));
 ofn.lStructSize = sizeof(OPENFILENAME);
 ofn.hwndOwner = hwnd;
 ofn.lpstrFile = szFile;
 ofn.nMaxFile = sizeof(szFile);
 ofn.lpstrFilter = _T("All\0*.*\0Text\0*.txt\0");
 ofn.nFilterIndex = 1;
 ofn.lpstrFileTitle = NULL;
 ofn.nMaxFileTitle = 0;
 ofn.lpstrInitialDir = szPath;
 ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;

 if(GetOpenFileName(&ofn)==TRUE)  // File dialog Open selected
 {}