Dr G.P.S.Raghava. Head, Department of Computational Biology, Indraprastha Institute of Information Technology, Okhla Phase 3, New Delhi, India Phone : 91-11-26907444, 91-172-26907400 Fax : 91-11-26907405, 91-172-26907444. E-mail : raghava@iiitd.ac.in Internet : webs.iiitd.edu.in/raghava