Need a mass update solution...

Hello all,

I am a beginner here... So please be patient :) I need to do the following:

I have two forms. Form A contains product informations. A few thousands or records. There is a field named "Categorie" and it is written in French... Form B only contains two fields, first the same category infos than Form A (a few hundred types) named "Cat_FR" and the translation field (in English), which is named "Cat_EN".

How can I "mass edit'' the Form A to add the field "Category" (with the info from "Cat_EN") to all records?

Thanks in advance!

patrice