apply update if OS is not affected but software on it is?

lenci0_at_hotmail.com
Date: 09/29/04


Date: Wed, 29 Sep 2004 05:17:42 -0700

If for example windows 2000 sp4 is not affected from a
vulnerability, but internet explorer 6 sp1 is affected,
should the update for the vulnerability be applied?
Please answer?