Change of Address

One of my friend has changed her address. She has completed her articleship. Her question is that whether she has to give change of address to ICAI cos she will be quoting her new address in her exam form for May 2011 and other further new communication to ICAI?? And if change of address is to be given, whether it can be given by email? If so, to which id?

Also she is doing CS executive program, so whether change of address can be given to ICSI via email?? If so, to which id??