Insert and update DB2 from SQL Server 2000 using OLEDB

I am using AS/400 and SQL Server 2000 and trying to insert and update from SQL Server.
When I run a DTS from SQL Server 2000, SQL Server 2000 is able to read the table from AS/400 but when I run a DTS from SQL Server 2000 to insert or update a table on AS/400, it does not do anything. No error, but no update or insert.
I am working on that for already 2 months and no improvement.
Plz help me.