this  Supplement.  See  Exhibit  A  to  this  Supplement  for  certain  information  regarding  the characteristics of the Mortgage Loans included in the related Underlying Trust. Issuance of Securities: The Securities, other than the Residual Securities, will initially be issued in book-entry form through the book-entry system of the U.S. Federal Reserve Banks (the "Fedwire  Book-Entry  System").  The  Residual  Securities  will  be  issued  in  fully  registered, certificated form. See "Description of the Securities – Form of Securities" in this Supplement. Modification and Exchange: If you own exchangeable Securities you will be able, upon notice and payment of an exchange fee, to exchange them for a proportionate interest in the related Securities shown on Schedule I to this Supplement. See "Description of the Securi- ties – Modification and Exchange" in this Supplement. Increased Minimum Denomination Classes: Each Class that constitutes a  Principal Only, Interest  Only  or  Inverse  Floating  Rate  Class.  See  "Description  of  the  Securities – Form  of Securities" in this Supplement. Interest Rates: The Interest Rates for the Fixed Rate Classes are shown on the inside cover page of this Supplement or on Schedule I to this Supplement. The Floating Rate and Inverse Floating Rate Classes will bear interest at per annum rates based on one-month LIBOR (hereinafter referred to as "LIBOR") as follows: Class Interest Rate Formula(1) Initial Interest Rate(2) Minimum Rate Maximum Rate Delay (in days) LIBOR for Minimum Interest Rate AF LIBOR + 0.30% 3.500000% 0.3% 6.50000000% 0 0.00% AS 6.20% - LIBOR 3.000000% 0.0% 6.20000000% 0 6.20% BF LIBOR + 0.30% 3.500000% 0.3% 6.50000000% 0 0.00% BS 6.20% - LIBOR 3.000000% 0.0% 6.20000000% 0 6.20% EI 6.20% - LIBOR 0.050000% 0.0% 0.05000000% 0 6.20% F LIBOR + 0.50% 3.500000% 0.5% 6.50000000% 19 0.00% FA LIBOR + 0.30% 3.500000% 0.3% 6.50000000% 0 0.00% FB LIBOR + 0.30% 3.500000% 0.3% 6.50000000% 0 0.00% FC LIBOR + 0.30% 3.500000% 0.3% 6.50000000% 0 0.00% FD LIBOR + 0.30% 3.300000% 0.3% 7.00000000% 0 0.00% FE LIBOR + 0.30% 3.480000% 0.3% 6.50000000% 0 0.00% FJ LIBOR + 0.30% 3.500000% 0.3% 6.50000000% 0 0.00% NF LIBOR + 0.30% 3.390000% 0.3% 6.50000000% 0 0.00% NS 6.20% - LIBOR 3.110000% 0.0% 6.20000000% 0 6.20% S 19.83333275% - (LIBOR × 3.3333333) 9.833333% 0.0% 19.83333275% 19 5.95% SA 6.20% - LIBOR 3.000000% 0.0% 6.20000000% 0 6.20% SB 6.20% - LIBOR 3.000000% 0.0% 6.20000000% 0 6.20% SC 6.20% - LIBOR 3.000000% 0.0% 6.20000000% 0 6.20% SD 16.75% - (LIBOR × 2.50) 9.250000% 0.0% 16.75000000% 0 6.70% SG 6.15% - LIBOR 2.970000% 0.0% 6.15000000% 0 6.15% SI 6.00% - LIBOR 0.050000% 0.0% 0.05000000% 19 6.00% SJ 6.20% - LIBOR 3.000000% 0.0% 6.20000000% 0 6.20% (1)  LIBOR will be established on the basis of the BBA LIBOR  method, as described under "Description of the Securities – Interest Distributions – Floating Rate and Inverse Float- ing Rate Classes" in this Supplement. (2)  The initial Interest Rate will be in effect during the first Accrual Period; the Interest Rate will adjust monthly thereafter. S-5