Activate only for specific posts/pages?

Hey there,

I´ve got a question which is kind of obvious from the title now, is it? 🙂

Can it be done? I don´t want users to generally be able to upload images, just in certain areas of the site where contests are taking place.

I´m curious what you say about it.

http://ww.wp.xz.cn/extend/plugins/comment-images/