Chip,

   To change a variable system-wide, you need to create a User Defined Command
(or UDC) file.  Using your favorite editor, create a file which contains the
following:

     Option Logon
     SetVar MyVariable "MyValue"

   If the above file is saved as myudc.udc.account, type the following from
MANAGER.SYS

     SetCatalog myudc.udc.account;System

   This will cause the SetVar command to be executed by every logon.

Hope this helps,
David N. Lukenbill
Raytheon Missile Systems Company, Louisville
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