BB Torch :: Cannot Remove Old Email Account

I have recently synchronised my old Blackberry curve with my new Blackberry torch and unfortunately an old defunct email account has been transferred across - there was no way of removing this prior to the transfer.I have created a new email account and receive emails to this address, however, when I try to send an email, I have the option of chosing which account I use to send this from. I can cope with this, but what I cannot do is forward a received email onto someone else as my phone just appears to automatically select the old email address as the default one and I no longer have this email account. I cannot remove this from my phone as when I have tried to "delete an email address" the old address is not shown anywhere no matter where I have looked.