I have several email addresses, all with the same problem. When I SEND an email from MY COMPUTER it shows up as well on my BB Pearl. How can I stop this? Thanks!

LoL. I have the same problem, but only with my GMail app.

Most likely you are sending yourself a blind copy. Log into your BIS account and edit each email account listed to delete the BCC.

If one of the accounts is a BES account you need to go to your mailbox and then Options->Email settings, Menu->Folder Redirection and click on your mailbox to expand it. Scroll to Sent messages and remove the checkmark.