Backup using SQL Server Express 2005

I am upgrading the backend of an Access 2003 mdb to SQL Server Express 2005 on a 6 user peer to peer network. In the past the user backed up the mdb every night by using compact and repair. I want to provide a simple and similar process for backing up the SQL Server database. I have created the following stored procedure which the user will invoke by clicking a Backup button in the Access front end. Since I really don't understand SQL Server backups, is this a good approach and if not, what should I be doing?

/****** Object:  StoredProcedure [dbo].[procBackupAndShrinkLog]    Script Date: 05/08/2009 07:43:40 ******/
SET ANSI_NULLS OFF
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[procBackupAndShrinkLog]
      @FQBackupName VARCHAR(1000) OUTPUT
AS
--
BEGIN
      DECLARE @BackupName VARCHAR(1000)
      DECLARE @DbName VARCHAR(500)
      DECLARE @DbPath VARCHAR(500)
      DECLARE @ErrMsg VARCHAR(1000)
      DECLARE @ErrNbr INT
      DECLARE @LogFileName VARCHAR(500)
      DECLARE @RC INT
      --
      EXECUTE @RC = master.dbo.xp_instance_regread
            'HKEY_LOCAL_MACHINE',
            'SOFTWARE\Microsoft\MSSQLServer\Setup',
            'SQLDataRoot',
            @param = @DbPath OUTPUT
      IF @RC <> 0 BEGIN
            SET @ErrMsg = 'master.dbo.xp_instance_regread failed with RC=' + CAST(@RC AS VARCHAR)
            RAISERROR (@ErrMsg,16,1)
            RETURN @RC
      END
      --
      SET @DbName = DB_NAME()
      SET @BackupName = @DbPath + '\Backup\'
                              + @DbName
                              + CONVERT(CHAR(8), GETDATE(), 112)
                              + STUFF(CONVERT(VARCHAR(5), GETDATE(), 8), 3, 1, '')
                              + '.BAK'
      SET @LogFileName = @DbName + '_Log'
      --
      PRINT CONVERT(VARCHAR,GETDATE(),109) + ' backing up database to ' + @BackupName
      BACKUP DATABASE @DbName
            TO DISK = @BackupName
            WITH DESCRIPTION = 'Backup before log truncate'
      SET @ErrNbr = @@ERROR
      IF @ErrNbr <> 0 BEGIN
            RAISERROR (@ErrNbr,16,1)
            RETURN @ErrNbr
      END
      --
      PRINT CONVERT(VARCHAR,GETDATE(),109) + ' shrinking log file'
      DBCC SHRINKFILE(@LogFileName, 1)
      SET @ErrNbr = @@ERROR
      IF @ErrNbr <> 0 BEGIN
            RAISERROR (@ErrNbr,16,1)
            RETURN @ErrNbr
      END
      --
      PRINT CONVERT(VARCHAR,GETDATE(),109) + ' backing up log file'
      BACKUP LOG @DbName
            WITH TRUNCATE_ONLY
      SET @ErrNbr = @@ERROR
      IF @ErrNbr <> 0 BEGIN
            RAISERROR (@ErrNbr,16,1)
            RETURN @ErrNbr
      END
      --
      PRINT CONVERT(VARCHAR,GETDATE(),109) + ' shrinking log file after truncate_only'
      DBCC SHRINKFILE(@LogFileName, 1)
      SET @ErrNbr = @@ERROR
      IF @ErrNbr <> 0 BEGIN
            RAISERROR (@ErrNbr,16,1)
            RETURN @ErrNbr
      END
      --
      PRINT CONVERT(VARCHAR,GETDATE(),109) + ' done'
      SET @FQBackupName = @BackupName
      RETURN 0
END