edit, and delete data from you file

Hi,
I'm new baby in linux and i need your help to make a script.
i have a file like this:

nameuser Password="password-user"
Data-profile=tipe-profile, IP-Address=ip-data, country=country_user, old-user=old_user

Scripts I need that allow search, edit, and delete data from you file.

how can i do..??

thank your for your help.
please i need your help..!
cheers.

dorek

This might get better responses in the shell programming forum...