My pictures are out of order. how can i fix that?

First, are you trying to view the photos on your camera, or is this after you've downloaded them onto your computer?

I took a look at my Cyber-Shot and it looks like it sorts photos strictly by the numbering sequence, not by date. I couldn't find a way to prioritize it to view by date in the playback menus either. Have you tried viewing them in index mode? You can do this by pushing the "Home" button while in playback mode. From there you can pick either single, index or slide show mode. If you have already tried this, do the photos still show up out of sequence?

If you are trying to view your photos on your computer, it's a simple fix, and it's only slightly different from Mac to PC. When you have the folder open containing all the photo files, simply click on the field at the top of the columns that you want to view them by, i.e., "file size", "file type", "date modified", etc.