TO:	ALL CLEARING PARTICIPANTS
FROM:	CLIENT SERVICES AND SUPPORT
DATE:	December 102007
SUBJECT:	U.S. Futures Exchange Expiration Dates for December 2007 Contracts

Cash Settle/Expiration Dates
Product Group	Last Trade	Expiration	Cash Settle
ISE Index Futures	Dec 21	Dec 21	Dec 22 *
Morningstar Index Futures	Dec 21	Dec 21	Dec 22 *
Wind Power Futures	Dec 31	Dec 31	Jan 2

* ISE Index Futures and Morningstar Index Futures, the trading session ends at 8:30 am Chicago time. CCorp.

Should you have any questions, please call or e-mail one of the following Client Services and Support Representatives: