Not sure how to do this

[Anjie]

I would like to remove the reply column, and posted by columns in one forum only, a poll board. I made a new set of templates, and named them the same as the style for that board, called aptly enough, poll board, set the board to that style, but the changes I made, by getting rid of the columns in the templates don't show up. Any ideas on what I'm doing wrong? Should I name a template something in particular? I just copied all of the same templates, then named them Poll Board, and made my changes, but the changes don't appear. Do I need to make only one template for that forum, and not have a whole list of all the templates?
I would like to do this without hacking. I'd really like to do a template mod. Any help you can offer would be really great and VERY much appreciated. So far from what I've seen you guys know how to do just about anything possible here, and some things people didn't know was even possible. If you have any more rabbits in that hat I'd be really happy!