Avoid 1/1/1900 during insert of time only data ?

--STORED PROCEDURE CALL
EXECUTE sp_CREATE_SESSION 92,448,1,3436,1000000,'Mon','10:00 am','1/5/2004','12/27/2004',1,'123',0

Note the '10:00 am" in the call.
This is placing 1/1/1900 10:00:00 AM in the table
It must not place 1/1/1900 in the table

Any sugestions on how to stop it from assuming 1/1/1900?
An After insert trigger is ok if it is the only way.

Here is the script for the table and SP

--TABLE:
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_tblSessionsStuds_tblSessions]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1)
ALTER TABLE [dbo].[tblSessionsStuds] DROP CONSTRAINT FK_tblSessionsStuds_tblSessions
GO

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_tblSessionsStuds_tblSessions1]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1)
ALTER TABLE [dbo].[tblSessionsStuds] DROP CONSTRAINT FK_tblSessionsStuds_tblSessions1
GO

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[tblSessions]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[tblSessions]
GO

CREATE TABLE [dbo].[tblSessions] (
      [SessionID] [int] IDENTITY (1, 1) NOT NULL ,
      [SeasonID] [int] NULL ,
      [PoolID] [int] NULL ,
      [StationID] [int] NOT NULL ,
      [InstructorID] [int] NULL ,
      [InstrTempID] [int] NULL ,
      [DayCode] [varchar] (7) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
      [ClassDays] [varchar] (15) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
      [TimeCls] [datetime] NULL ,
      [OriginalStartDate] [smalldatetime] NULL ,
      [OriginalEndDate] [smalldatetime] NULL ,
      [MthlyWkly] [smallint] NULL ,
      [MaxNumStuds] [varchar] (7) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
      [Hold] [bit] NOT NULL ,
      [SessionChanged] [datetime] NULL ,
      [LockID] [int] NULL
) ON [PRIMARY]
GO
GRANT INSERT, UPDATE, DELETE, SELECT ON tblSessions TO PUBLIC
GO




--STORED PROCEDURE:
CREATE PROCEDURE dbo.sp_CREATE_SESSION
      @SeasonID int,
      @PoolID int,
      @StationID int,
      @InstructorID int,
      @DayCode varchar(255),
      @ClassDays varchar(255),
      @TimeCls datetime,
      @OriginalStartDate datetime,
      @OriginalEndDate datetime,
      @MthlyWkly int,
      @MaxNumStuds varchar(25),
      @Hold bit
AS
INSERT INTO tblSessions
      (
      SeasonID,
      PoolID,
      StationID,
      InstructorID,
      DayCode,
      ClassDays,
      TimeCls,
      OriginalStartDate,
      OriginalEndDate,
      MthlyWkly,
      MaxNumStuds,
      Hold
      )
VALUES
      (
      @SeasonID,
      @PoolID,
      @StationID,
      @InstructorID,
      @DayCode,
      @ClassDays,
      @TimeCls,
      @OriginalStartDate,
      @OriginalEndDate,
      @MthlyWkly,
      @MaxNumStuds,
      @Hold
      )
SELECT @@IDENTITY AS SESSION_ID
GO
GRANT EXECUTE ON sp_CREATE_SESSION TO PUBLIC
GO