Not all CGI's are not created equal, behold:

#!/usr/bin/perl -w
use strict;
use CGI;
print "Version: $CGI::VERSION\n",
      "Revision: $CGI::revision\n";
[download]

I suggest you crack open CGI.pm and check to see if Vars is in there, it'd be listed under %EXPORTED_TAGS as':cgi-lib' => [qw/ReadParse PrintHeader HtmlTop HtmlBot SplitParam Vars/], and it would look something like (from 2.752)

# These are some tie() interfaces for compatibility
# with Steve Brenner's cgi-lib.pl routines
'Vars' => <<'END_OF_FUNC',
sub Vars {
    my $q = shift;
    my %in;
    tie(%in,CGI,$q);
    return %in if wantarray;
    return \%in;
}
END_OF_FUNC
[download]

ar0n says you don't really need it, and that you can use my %form = map { $_ => $q->param($_) } @labels; to replicate the functionality, but be aware that Vars is significantly faster than the map method. in my benchmarks, Vars was at least %20 percent more efficient (it was significantly more, but I don't recall the exact number, i'll update in a minute).

 
___crazyinsomniac_______________________________________
Disclaimer: Don't blame. It came from inside the void
perl -e "$q=$_;map({chr unpack qq;H*;,$_}split(q;;,q*H*));print;$q/$q;"