This sounds like a one-time operation, so I don't see why you need a rule to
do this.
If you want to create a Contact based on a e-mails sender name and e-mail
address, simply right-click their display name in the message header and
select "Add to Outlook Contacts...".
BTW, this forum is supposed to be dedicated to issues around customizing
Outlook forms. There are microsoft.public.outlook.general and
microsoft.public.outlook.contacts groups you can use for similar questions.