This override.ini functionality was removed from aolserver 4.
The answer in AS4 is to convert the .ini to .tcl and source the file from you serviceN.tcl startup script. This can be accomplished with ini2tcl.tcl found in the aolserver source distribution.
Ref: http://www.mail-archive.com/aolserver@listserv.aol.com/msg06585.html
