Post Submission Widget

Is there any way I can create a widget to sit on the side of the forum that will allow a user to submit a post to a certain thread?

For instance, I run a duel academy, and if someone duels another person, the widget on the side will have a submission box with:

Partner's Name:
Partner's Rank:
Times Dueled:
Times Won:

or something like that, so when they press "submit" it will post a new reply to a crediting thread. Is this possible?