This plugin provides the daily or hourly prayer guides for the 40/40 Prayer Vigil (English) and 40/40 Campaña de Oración (Español).
On the options page, there are settings that will force the guide to display for a particular date or date/time, or for a day or hour number. Select one of those to set, and you can see the results. Be sure to clear them when you are done, so you won't miss the actual guides once the vigil begins!
Yes. The div tag containing the guide has the id attribute of "FortyFortyPrayerGuide". You can create CSS based on that ID, and it will style the guide the way you like. To see the tags to style, you can enable the debugging settings described above and view the source, or you can go to http://services.djs-consulting.com/FortyForty/PrayerGuide/html/2012/en/ESV/day/1 for a sample.