Once you open the program and sign in to your SkyDrive account all your online files are accessible. You can open the files in Read Only or Edit mode.
In Preferences I set all my files to open in Edit mode so that when I double click on a file, Excel 2011 downloads, then opens the file so I can make changes.
Once changes are saved the file uploads to your SkyDrive account.
There’s also an option to upload a file directly to SkyDrive. And you can also get a URL link to any file on your SkyDrive.
I don’t know if a similar program is available with the Windows version because I didn’t purchase the entire Office suite of programs (too expensive). With Excel 2010 I have to launch my web browser to connect to my SkyDrive account in order to get access to my cloud storage files.
Files in the cloud are much easier to access and work with using Microsoft Document Connection. Take advantage if you have a Mac.