When you tie a variable in Perl:
tie %Config, 'Config', { "abc" => "def" };
In VB (VB6 or current VB.NET), you will want to wrap that variable as a Property. The Get Property corresponds to Perl's tie FETCH() operation, while Let/Set (Perl-only people: don't ask) correspond to Perl's tie STORE() operation. Making a variable tied/Property'ed gives you a chance to do some real work behind the scenes without forcing you to create a whole class.
(Noted here mostly so I remember it.)