How to access SkyDrive from any Windows 8 app
In addition to browsing and managing your files directly using the SkyDrive app, you can also use other Windows 8 apps to choose a file or save files to SkyDrive.
For instance, to choose a lock screen or a picture password, you can select from photos on your SkyDrive, right from the file browser. Just choose SkyDrive from the dropdown list of file locations and select a picture.
Or, if you’re using an app like SketchBook, the sketches you create can be saved directly to SkyDrive, right from the app. Again, just choose SkyDrive in the dropdown list of file locations.