How to Copy the Autocomplete Information to a New Outlook Profile

In Outlook 2010 the best solution is to keep the same name(profile name) on the new computer. Once you keep the same name the auto complete will transfer by itself if you copy the "username.pst" file from the old computer(located c:\users\name of the user\documents\Outlook files) to the new.
But in older versions of Outlook(2003/ 2007). there is a file named "Outlook.NK2" under the user profile
In windows 7 (C:\Users\username\AppData\Roaming\Microsoft\Outlook\Outlook.NK2 or %APPDATA%\Microsoft\Outlook )
In Windows XP (C:\Documents and Settings\username\Application Data\Microsoft\Outlook\Outlook.NK2) copy this file to the new profile.

 Import the Auto-Complete List

You are now ready to start Outlook and import the file, but you must start Outlook with a special one-time command.

Do one of the following:

• Windows 7    Click Start {picture}. Next to the Shut down button, in the Search programs and files box, type outlook /importnk2 and then press Enter.
• Windows Vista    Click Start {picture}. Next to the Shut Down button, in the Search box, type outlook /importnk2 and then press Enter.
• Windows XP    Click Start {picture}, click Run, type outlook /importnk2 and then press Enter.

If you want to export the .NK2 files into contact use the software from Nirsoft
http://www.nirsoft.net/utils/outlook_nk2_edit.html