1. Close any running copies of Microsoft Outlook.
2. Open Windows Explorer.
3. Make sure hidden files and folders are visible in Windows Explorer by navigating to Tools -> Folder Options -> Advanced Settings, and select "Show hidden files and folders."
4. Look in the directory %APPDATA%\Microsoft\Outlook for any files with the .NK2 extension. These are the nickname caches. (If they're not visible there, you may need to search the system for any files that match that extension.)
5. Transfer the file to the corresponding directory on another computer with Outlook
6. Restart Microsoft Outlook and all of your type ahead data should be there.

NOTE: This will allow transfers from Office 2003 to Office 2007

How to remove type ahead/AutoComplete information from Outlook

Begin typing the address that you want to remove. When the type ahead value that you want to remove is shown, right-click on the type ahead box. You can then use the arrow keys on the keyboard to select the name you want to remove and then press the DELETE key to remove it.

//Allows an add-in to load after you have started Outlook so you can find out any errors it is getting.

set VSTO_SUPPRESSDISPLAYALERTS=0
"c:\program files\Microsoft Office\Office11\Outlook.exe"