cl_bcs_convert=>string_to_solix; Problem with Excel 2000

Dear All,

I am using the method 'cl_bcs_convert=>string_to_solix' (with iv_codepage = 4103) to send a mail with excel as attachment. But I found that, with excel 2000, some rows are missing and some some duplicate rows are coming. Also it is observed that in Excel 2003, the excel is coming very properly.

Can anbody help me..?