Hi, apologies for this post but some of my recent postings did not get through adn neither did they bounce back so this is atest to see whether in effect i am still subscribed or not.. apologies again for the spam.. -Vikram Department of ECE, Rice University | 713 348 3786 (O)| 713 664 5650(H) http://www.ece.rice.edu/~kanodia