Terry,thanks for the reply. 1,'The only difference in approach between our two methods is that I created a USER.ZOSV1R3.VTAMLST, and subsequently a USER.Z16.VTAMLST to hold the source code and provide consistent naming'
Weird....Maybe it's the HLQ that makes the difference? I checked a book 'MVS System Programming'.It's old but concerning VTAMLIB,it says that all library must be 'APF authorized'.As for 'APF',I wonder what on earth it is and what's the relationship between APF and RACF. Anyway,my guess is that HLQ is relevant on this issue for the 'USER' HLQ is shipped with the system and it's the only difference between 'user.**' and 'johnny.**'.However,I dont know the real reason underlying. 2,'Assembling and linking the USSN into USER.VTAMLIB means that the modified USSN appears for both VTAM and TCPIP access' USSN module must be in USER.VTAMLIB?You know,if you don't do any change, USER.VTAMLIB is empty and the sytem finds the module in ADCD.ZOSV14S.VTAMLIB.However,at that time, the logon screen seems to be the same for for both VTAM and TCPIP access too. -- Best Regards, Johnny Luo ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html

