Copy Contacts

What I do is, on the PC of the person w/o the Outlook contacts, map a drive to C$ on the person who has the contacts - and ensure they're not in Outlook.

From there... Open Outlook...
Outlook | File | Import & Export - From another Program or File | Next ->
Personal Folder File (.pst) | Next ->
Browse to the Mapped C$, go to that user's Outlook.pst file and select it | Next ->

[Note: Outlook's Default location is -> C:\Documents and Settings\UserName\Local Settings\Application Data\Microsoft\Outlook\Outlook.pst]

In Select Folder to Import From, Select Contacts and click Finish.