preventing shared files

I suspect this is more of a UNIX issue than a Smartlist issue, but I'm stumped nevertheless. I'm currently running one list, and am trying to set up another. I'd like to make modifications to files for one list, such as rc.custom and subscribe.txt, but not affect those files for the other list. Can anyone direct me in the right direction? Thanks, Rob =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Rob Skinner La Habra, California mailto:rskinner@rustyiron.com http://www.rustyiron.com