Problem in removing e-mail contact

[colp]

A friend recently changed e-mail carriers. I edited her address in my contact list and when I go to my list, the new e-mail address shows up. However, when I compose an e-mail and type in her first initial, the old e-mail address comes up, along with the new one. I sometimes click on the wrong address and don't realize it until the e-mail is returned.  I have been unable to delete the old address, as it does not come up when I open my contact list.  Any solution??

[somegirl]

What browser are you using? You'll probably need to clear the auto-complete entries for your browser.

[colp]

I use internet explorer.  How do I clear my auto-complete entries in this browser?