Folks, After having read the comments and researched perlbrew further, I would like to see if I can get some further advise on how to decouple my application perl from the system. I would like to make a mirror image of the existing system perl environment so that my application programmers can run from there. I copied the environment to another area on my test box, but I believe that there is more involved in order to have this perl environment segregated from the other (namely changing @INC, PERL5LIB) etc.) I can then add modules as requested from the appl. programmers, and for the most part not effect the the system perl. Would appreciate it if anyone would have steps involved , so that I don't miss anything. Thanks very much in advance for the help. BTW, I can use perlbrew in the future , once this decoupling as happened. regards, Tom