DTS - Excel conversion from Number to Database Char

I have to import data from Excel file to an SQL Server Database.
One of the Excel Worksheet columns it's number (with max value of 4550204008914630000), I will import the column to a char 21 database field. Using a DTS to do the work, when I import that column it will convert the data in something like 4.5502041E+18.
Can you give me some help for the DTS.

Thanks,
PauloDoes the table already exists? Or are you letting DTS create it?|||The Table already exists. It's created each time the DTS run.

This is the script used on the DTS:
/*
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[Temp_freqnib]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[Temp_freqnib]
GO

CREATE TABLE [dbo].[Temp_freqnib] (
[Cartao] [char] (10) COLLATE Latin1_General_CI_AS NOT NULL ,
[numX] [char] (21) COLLATE Latin1_General_CI_AS NOT NULL ,
[desc] [varchar] (80) COLLATE Latin1_General_CI_AS NULL
) ON [PRIMARY]
GO
*/

It must be imported to the numX field.

Thanks,
Paulo|||my mistake...

The table exists only when the DTS runs, and it's created before the import of the data from excel.

Paulo