how to invoke a network configure dialog in install.cfg

[shava knightmare]

i'm building a automatic install cdrom with install.cfg for sysinstall. and
i cannot find a way to invoke network configure dialog in install.cfg.
the tcpMenuSelect command popup the configure dialog and throw a error
message when selected the device.So what shall i do so that i
can get a user inputted ipaddress in system install progress?