http://blogs.technet.com/inside_osd/archive/2007/12/13/why-can-t-i-import-a-driver-from-a-local-drive-path.aspxBoot Images, Operating System Images, Operating System Install Packages, and Drivers must be imported from a UNC path in ConfigMgr 07. Many people have asked why they can't reference a local drive path instead. Here is the explanation for drivers, courtesyen-USCommunityServer 2.1 SP1 (Build: 61025.2)