hrmm.. usually a good idea to at least setup @EXPORT so you don't poision your main app with all your functions.

package my_module ;
use strict ;

use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
$VERSION     = 1.00;
@ISA         = qw(Exporter);
@EXPORT      = qw(&db_open &db_close) ;
@EXPORT_OK   = qw(&db_open &db_close &db_store &db_fetch &db_keys);

#your subs go here


1;
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Least this is what i do.. look at the Module Tutorials