Constellation Software Inc.TSX: CSU

Constellation Software Inc. to Present at CIBC World Markets Institutional Investor Conference in Montreal

· Issued by Constellation Software Inc. via CNW
TORONTO, Oct. 3 /CNW/ - Constellation Software Inc. ("Constellation")
(TSX: CSU) announced today that its Chief Financial Officer, Barry Symons,
will make a presentation at the CIBC World Markets 5th Annual Institutional
Investor Conference in Montreal on October 4, 2006 at 8:35 a.m. ET. Investors
are invited to listen to a webcast of the event at www.csisoftware.com in the
"Webcasts" section. A replay of the presentation will be available at the
website until October 11, 2006.

About Constellation:

Constellation's common shares are listed on the Toronto Stock Exchange
under the symbol "CSU". Constellation Software is an international provider of
market leading software and services to a number of industries across both the
public and private sectors. The Company acquires, manages and builds vertical
market software businesses that provide mission-critical software solutions to
address the specific needs of its customers in those industries.