Delphi 4 and SQL Server 7.0 Stored procedures

I have an application written in Delphi 4 that used to call stored procedures
in SQL 6.5.  We are now in the process of upgrading to SQL Server 7.0 and we
are getting errors when we call the stored procedures now because we don't have
the 'exec' keyword in the SQL statements in the Delphi code.

From the SQL Query analyzer, it is possible to run a stored procedure without
the 'exec'.  Any ideas why it won't work via the Delphi app??