I guess what you say is to customize the toolbar to include the button that shows the 'Styles and Formatting' window. But this is not the issue I am having here. I am already able to show that window, and the button that shows it was included by default in the toolbar the first time I used Open Office.
My problem really is that the 'Styles and Formatting' window shows floating over the main OOo window, which has always been the default ever since I started using OOo a few years ago. But I remember I was able to dock this window into the right edge of main OOo window. I am sure I was perfectly able to do this out-of-the-box in Ubuntu Dapper 6.06 less than a year ago, but now in Ubuntu Feisty 7.04 this is not working for me. It is more like a small annoyance than a real problem, since I can live without this, but I was just curious as to why this ceased to work, or if I am doing something stupid.