  This paper has been removed by arXiv administrators because it plagiarizes
hep-th/0308070, gr-qc/9910015, and others.
  This paper has excessive overlap with the following papers also written by
the authors or their collaborators: gr-qc/0607103, gr-qc/0606080,
gr-qc/0607119, gr-qc/0502043, gr-qc/0505079, gr-qc/0607115, gr-qc/0506061,
gr-qc/0607109, and others.
