Russian characters are appearing as Garbage in Excel form

Hi All,

I am writing one file program where MBLNR header level & item level data can be written in Excel file.

form header data:-

first line is movement type and second line is document date. These data is appearing perfectly in excel file.

where as the problem occurs in the following lines

company code description ( Ru language ) is appearing as some unknown characters as mentioned above.

Werks details  ( Site name, Site city , Site street )

I am using  Call function 'GUI_DOWNLOAD'

                    EXPORTING

                       FILENAME = lv_filename

                       FILETYPE = 'ASC'

                       CODEPAGE = '1504'                            

                       WRITE_BOM = 'X'                  

                     TABLES

                       DATA_TAB = it_All_Data.

In SNLS transaction, the following has been configured

          Adj. DB according to country    -          Not completely installed

          System language (database)

          Database codepage                  -            Unicode

          Current Codepage of Appl. Server      -   4103

          Codepage of Front End                       -    4110  UTF-8 GUI

My SAPLOGON GUI code page properties :-

   Language - default

   Encoding -  Unicode (UTF-8)

Also one more observation from my side  :-

table TCP00 ( SAP code page catalog ) -

for code page 1504 -  Microsoft Windows 1251 mit kyrillisch ( CP Comment is defined )

Please help me

Regards,

Suman