A family of Microsoft word processing software products for creating web, email, and print documents.
You cannot do that with a dropdown list. Depending upon what you mean by a Dropdown, you may be able to have the Name, the Address and the Phone number in different columns of the dropdown and have process run on exit from the dropdown so that the Address and Phone details for the selected name are inserted into the document.
See the following pages of Greg Maxey's website :
http://gregmaxey.mvps.org/Create\_and\_employ\_a\_UserForm.htm