Pittsburgh—Computer reseller and network installer Black Box Corp. (Nasdaq:BBOX) has purchased yet another small regional company. Black Box, which has bought more than 60 companies over the past three years, has bought $2 million Kitchener, Ontario-based technical design, installation and maintenance services firm Lanetwork Sales Ltd. The privately-held Lanetwork services customers in Toronto and throughout Southern Ontario. Terms of the deal were not disclosed.