Hi Ken. Basic z39.50 commands which you can use with the Yaz client (for a PC) from the command prompt are (based on our library catalogue): 1. Open a connection: open tcp:zconn.lib.monash.edu.au:7090 2. Select the correct database: base voyager 3. Do an author search find @attr 1=1003 smith 4. Change format format usmarc 5. Show results show (or show 3) 6. Show some holdings records format opac show All of the use attributes for Z39.50 are at: http://lcweb.loc.gov/z3950/agency/defns/bib1.html And some basic information about Z39.50 is at: http://www.loc.gov/z3950/agency/ Hope this helps. Simon -- _______________________________________ Simon Huggard Systems Manager Information Systems Division Monash University Library Monash University Building 4, Monash University, Vic, Australia 3800 Phone: (03) 9905 9138 Fax: (03) 9905 2610 Mobile: 0425 774 260