Explorer windows in Vista offer several different layouts. To switch between them, click Oraganize on the toolbar, click Layout, and then select or clear the panes you want to see.
For example, the Preview pane isn’t shown by default. It’s useful if you’re browsing pictures, though, because you can see a larger version of the pic. After the jump, a screenshot of the Preview pane enabled.
Click the thumbnail to see the full screenshot
It’s a shame you can’t move the preview above the file view, like it was in XP.
You’re right–I figured I could rearrange the windows like I can in Explorer, but there doesn’t seem to be a way. If anyone knows how, add a comment.
I suspect they put it on the right because more people are using widescreen monitors.