I discovered an interesting helpful improvement in Photoshop CS5. If you have Photoshop open and are browsing your hard drive for styles you might have saved in other locations (for example you've purchased and downloaded a style kit) you can just double click on the style file and it will automatically load it into Photoshop and apply it to your current layer.
This saved me a bunch of time after re-loading Photoshop and is great when you only want to use a style for one page. Just click on the style in your scrapbook folder. Then right click on it in the panel and delete after you are done with that page.