This is an optional interface on the Dataset object. It has methods to:
interface IMDFind : public IUnknown
{
HRESULT FindCell(
ULONG ulStartingOrdinal,
ULONG cMembers,
LPCOLESTR* rgpwszMember,
ULONG* pulCellOrdinal);
HRESULT FindTuple(
ULONG ulAxisIdentifier,
ULONG ulStartingOrdinal,
ULONG cMembers,
LPCOLESTR* rgpwszMember,
ULONG* pulTupleOrdinal);
};