forms builder->news explorer

hello,

i want to have an iview for announcements which can be created by everyone. the problem is that i don't want to have the posibility for editing the announcement once created.

at the moment i've created a new form for the announcements and an iview which uses this form.

as layout set i've used "newsExplorer" and the permission for the folder is set to "read/write". and the problem is that everyone can edit any announcement.

what can i do to change that?

thx

irina.

any helpfull answer will be rewarded.