How can I make my Outlook Express forward automatilcly to my yahoo mail or Gmail?

I've got outlook now but I want to switch over to a web based email account. I just don't want to loose any emails in the transition period.

How can I make my Outlook Express forward automatilcly to my yahoo mail or Gmail?
open yahoo mail


in right coner you will see options


click options


them mail address"s


then click add


new email address you can check at yahoo