How can I force Win-7 to index files on a NAS?

I want to include all the files on my NAS (Music, Videos, Documents, Downloads) in Libraries on a remote laptop, However, to add files to a Library, they must be indexed. How can I get the indexer to crawl the NAS? (Using offline files can’t be a solution because the NAS RAID contains 2.7Tb of Data – obviously there’s no room on a local hard drive for a sync.)