If you want to use a specific version of a module, IIRC use will take a filename as well as a modulename. Whoops, after checking, use won't allow a filename, but require will. So if you want, you can say somthing like require '/home/you/perllocal/site/DBIx/Password.pm';, and be assured that you're picking up the right version. (BTW, use and require have other differneces too. If you're using an OOish convention for DBIx::Password (that is, all functions you use in DBIx::Password are either fully named (IE include "DBIx::Password" in them) or use an object that was already created using a fully-named call) then it won't matter. If you aren't, you need to wrap the require inside a BEGIN {...} block (for reasons I don't feel like explaining, it needs to happen earlier then it would with normal code, at the BEGINing of your program's lifetime, just after the line is compiled. use does this for you, behind the seans. The POD (Plain Old Documentation) for DBIx::Password uses a style that would be OK, so you probably don't need the BEGIN block. (BTW, I'm not yelling, BEGIN has to be written in all-caps.)