Hi Anonymous,
Not sure what you mean by move your files however here is the instructions to change your email address on your account. Provided by Dorothy Barry.
To change your e-mail address click to the edit page of profile, change the E-Mail Address field, and save your changes. You will need to click the save button twice because the first time a pop-up will ask you to confirm the change.
See more here: http://www.wikitree.com/wiki/E-mail_addresses
Note that your e-mail address is your WikiTree login. The next time you come to the site you will need to use your new e-mail address.