W2K is not like W9*, no passwords for a share.
Have him create a user (Computer Management, System Tools, Local Users & Groups, Users, right click - New User.)
Now, give the New User access to the share. (Still in Comp Mgmt: Shared Folders, Shares, sharepoint - Properties, Share Permissions tab, click Add, select New User, grant rights, click OK a few times.
--Woodie