Reading Text File from selection Screen and populating table (Urgent)

Hi All,

I have some requirment like i in my report i have to initial my Input feild from text file is it good to populate a internal table or range.

I have three feild in a excel file that entry can more then 500

data example

Matnr Date Day

A1 10.07.2007 12

B1 10.07.2007 10

A1 19.07.2007 15

C1 20.08.2007 30

E1 11.09.2007 12

This report for Price Protection claim.

even u can help me out with proper table plz this is urgent.