finding records using a Date expresion

From: Bob (bhorwitz_at_zachys.com)
Date: 08/16/04 

Date: Mon, 16 Aug 2004 10:59:24 -0700

how do I find all records that were created before
today minus 150 days. I could easily do this in MsAccess
by doing the following

by filtering off of the Date created field using the
expresion of <Now ()-150