I have recently acquired another device, with a new email address. Can my old emai address be changed to the new one, if not, I will keep my old account and correspound from that device. Please advise me on this problem. Thank you.
Go to the UCP (user control panel) under the Board Index link
Go to Profile (2nd tab across)
Go to Edit Account Settings
et voulois 
Thanx Magsj, I will try it.