You can't really "change" your email address you can only make a new one the old accounts should still be there. Who is your email provider?
Hello, I apologise for not answering sooner, I was trying to find other solutions to my problem. I am with Sky, but I could`nt get through to them, I have actually just managed to find my old e-mails but hidden in a Windows mail folder and I cannot e-mail them across to my new address, because my old computer cannot find a network to use to send to my new laptop. so I think the best option is probably to look at my e-mails on my old computer & print off a hard copy before the computer crashes. thank you for your time and trouble anyway