generic extraction with function module

Hi Gurus,

my requirement is that i have to write a function module that can collect data from 5 tables in R/3 . i know there is function module (RSAX_BIW_GET_DATA_SIMPLE) which i can use as template but the problem is i am not good at ABAP so i dont know where to start so pls could u me some function mudule code written so i can take that as a template.

it is very urgent to me.

thanks in advance.

Regards,

ravindra.