Catalyst Educational Services, Inc. - Notice of Offer to Exchange Shares of Common Stock of Entrust Technologies, Inc. and Williams Communications, Inc.

Business Editors

PALM BEACH GARDENS, Fl.--(BUSINESS WIRE)--Nov. 29, 2000

Catalyst Educational Services, Inc. (Catalyst) was created to become a provider of consulting services to private schools and charter schools.

Catalyst is offering 1,000,000 Units at an exchange price of $1.00 per Unit in exchange for common stock of Entrust Technologies, Inc. at the rate of $25.00 per share and Williams Communications, Inc. at the rate of $17.00 per share, upon the terms and subject to the conditions set forth in the Exchange Offer/Private Placement Memo (Exchange Memo) dated November 29, 2000 and the related Letter of Transmittal. Catalyst is located at 2000 PGA Boulevard, Suite 4410, Palm Beach Gardens, FL 33410, [phone].

THE OFFER EXPIRES AT 8:00 PM, NEW YORK TIME

This announcement is not an offer to purchase or a solicitation of an offer to sell or exchange units or common stock. The Offer is made only by the Exchange Memo and the related Letter of Transmittal. No consideration is being solicited or will be accepted by way of this general announcement. Sales will only be made to accredited investors. The Offer is not being made to, nor will tenders be accepted from or on behalf of, holders of common shares in any jurisdiction in which making or accepting the Offer would violate that jurisdiction's laws. The Catalyst Units have not been registered with or approved by any state agency or the SEC and is being offered or sold pursuant to an exemption from registration.

The Depositary for the Exchange Offer is Electronic Trust Depositary, Inc., 2000 PGA Blvd., Suite 4410, Palm Beach Gardens, FL 33410 [phone]. A copy of this Exchange Offer may be obtained at http://www.exchangetender.com/Catalyst. For additional information please contact Jill Stevens at [phone].