1: log on or create your account at Blackberry.com/go/vzw you should see all the email accounts you have set up on your device and on the right 3 icons. Click the edit next to the email you want to change and then you can either change the signature or remove it completely.
2. Log on to the email settings right through your Blackberry. (You should have an email settings icon if you did not hide it). Log in through here then again select the email account you want to edit and again you will see signature, either remove or change to what you want.
Repeat for each email address you want to change.
Does anybody know how to change an Email setting that when I send an Email to someone it EMAILS ME WITH A COPY. I have tried find the setting on my email account and my BB with no luck.
To email yourself a copy from your BB device hit the menu button, choose the settings folder, then email settings. Highlight the email account you want then hit the menu button and choose edit. You can then scroll down and enter your email address into the Auto Bcc field and be sure to save your settings as you exit. This is one way it can be done on my new Tour....hope this helps you out!!