Enhancement for Vendor Creation

Hi Gurus,

In my reqirement i'm creating new vendor, after saving vendor a pop-up screen will come, in that pop-up screen some custom fields are there, After user enter the values on the custom fields i want to insert values of the fields into LFA1 table.I append the custom fields on the pop-up screen into table LFA1. I want to insert these field values into LFA1 table.I search all USER-EXITS and BADI'S but i did n't find any one if u know any badis for this purpose one please help me.