converting classical report to ALV
I have generated table maintenance for a ztable: YSHELFLIFE. When the user opens this table in SM30 totally there are 13 fields in which 4 fields are editable. When the user modifies some fields and clicks on save.. and if the user selects utilities- change log. This will pop one selection screen based on time constraint. Upon execution it will display all the table contents along with the old and modified values of fields as a classical report.
Program: RSVTPROT is generating this report which is a standard program. Now my requirement is to convert this into ALV report. I have to copy the standard program into Zprogram and convert into ALV.
Kindly suggest me how to convert RSVTPROT to ALV. Very urgent please do the needfull
<b> where do i need to change.. I want code... Points are very much sure for usefull answers </b>