Okay, so here is a picture of the entire passenger car series, known as the "Millenium Series". The cars in order from top to bottom as follows:
2000 - Black and Tan (K-Line p/n K4598-2000)
2001 - Lager (K-Line p/n K4598-2001)
2002 - Chesterfield Ale (K-Line p/n K4598-2002)
2003 - Light (K-Line p/n K4598-2003)
2004 - 175th Anniversary (K-Line p/n K4598-2004)
2005 - Porter (K-Line p/n K4598-2005)
2006 - Light Lager (K-Line p/n 33-6025)
2007 - Locomotive (Mike's Train House) - Not Shown