Customizing enumeration deleting defaults

[claudio60]

Hi,

I am using Mantis 1.0.0rc2 on windows 2000 with apache
web server

I want customize some enumeration value in Mantis.

I have read in manual that i need modify three files:

config_inc.php (overrides values config_defaults_inc.php)
custom_constant_inc.php (overrides values in constant.php)
custom_strings_inc.php (overrides values in lang/english.txt for example).

I need less value than default value for the status and I wish rename some enumeration value.
I don't know if I have to delete the values from the defaults file described above or update the unnecessary fields with empty value:
can anyone help me?
Thanks a lot

//Claudio