Constellation Software Inc. announces conference call to discuss first quarter results

TORONTO, May 18 /CNW/ - Constellation Software Inc. (TSX:CSU) announced
today it will host its first quarter conference call and live audio webcast on
Tuesday, May 23, 2006 at 5 p.m. ET.
Mark Leonard, Chairman and President and Barry Symons, Chief Financial
Officer will discuss the Company's operating results and financial performance
for the period ended March 31, 2006. The Company will release its results
after market close on the day of the call.
To access the call please dial 416-644-3421 or 1-800-814-4862. The
webcast will be accessible at www.csisoftware.com.
A replay of the conference call will be available as of 7 p.m. ET the
same day until midnight, May 30, 2006. To access the replay please dial     
416-640-1917 or 1-877-289-8525 followed by the passcode 21189453 followed by
the number sign.

About Constellation Software Inc.
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.