Everything you need is in the @argv array, but the best way to access that array IMHO is using 'shift'. Here's a quick test I created to show a script accepting command line parameters:

#!/usr/bin/perl -w
#
# This script is set up to accept *3* parameters:
# >./perl_argv.pl abc 123 xyz

use strict;

my $arg1 = shift;
my $arg2 = shift;
my $arg3 = shift;

if (! $arg1) {
    print "Didn't get 1st argument!\n";
}
else {
    print "1st argument = $arg1\n";
}

if (! $arg2) {
    print "Didn't get 2nd argument!\n";
}
else {
    print "2nd argument = $arg2\n";
}

if (! $arg3) {
    print "Didn't get 3rd argument!\n";
}
else {
    print "3rd argument = $arg3\n";
}
[download]

HTH.