http://www.borland.co.jp/qanda/cbuilder/c0009385.html
#include <shlobj.h>
void __fastcall TForm1::Button1Click(TObject *Sender)
{
char lpBuff[MAX_PATH];
  BROWSEINFO bRowsInf;
  ITEMIDLIST *id, *pbrowse;
  IMalloc   *imllc;


  CoGetMalloc( 1, &imllc );
  memset( &bRowsInf, 0, sizeof(bRowsInf));
  SHGetSpecialFolderLocation( Handle, CSIDL_NETWORK, &id );

  bRowsInf.hwndOwner = Handle;
  bRowsInf.pidlRoot = id;
  bRowsInf.ulFlags = BIF_BROWSEFORCOMPUTER;
  bRowsInf.pszDisplayName = lpBuff;

  try{
    if( ( pbrowse = SHBrowseForFolder(&bRowsInf) ) != NULL )
    {
      ShowMessage( lpBuff ); //취득한 컴퓨터명
    }
  }
  __finally{
    imllc->Free(pbrowse);
  }

  imllc->Release();
}