What is the correct way to share and be able to edit files from a hotmail account (default for the WP7 phone) and a live account I can sign into from a computer. I shared the folder from live account which sent the email to the phone, which downloaded the files. When I edit them on the phone and save them, the changes don't seem to upload to skydrive (not visible from the hotmail account).

I downloaded the skydrive app and that doesn't seem to work either. You can see the spreadsheet but the changes don't seem to make it back to skydrive from the phone.

Thanks