  This paper has been removed by arXiv administrators because it plagiarizes
gr-qc/0303009, hep-th/0405047, gr-qc/0412120, gr-qc/0602107, hep-th/0311050,
and gr-qc/0508005.
  This paper has excessive overlap with the following papers also written by
the authors or their collaborators: gr-qc/0607119, gr-qc/0607103,
gr-qc/0607126, gr-qc/0606080, gr-qc/0607102, gr-qc/0510123, gr-qc/0607110, and
others.
