Bulk edit like 250 posts

I need to do this bulk edit (http://wordpress.tv/2009/01/14/using-quick-edit-and-bulk-edit-to-manage-your-posts-in-half-the-time/)…but with like over 250 posts. Only 15 show up per page. Any suggestions? thanks a ton.

Settings>Reading changes that number doesn’t allow more bulk editting.

Thanks.