I went through this recently. Found some posts here with helpful info but I don't have them handy. You might try searching for them.
Originally Posted by btbam91
But, first try this.
- Open the Office App on your phone
- Tap the "notebooks" icon at bottom of screen
- If you see your "Personal (Web)" notebook on Skydrive listed, tap it to open
- Then you should also see an "Unfiled Notes" folder. Touch and hold that to bring up the menu
- select "set as default"
That should cause any new notes you create on your phone to automatically be filed in that folder and sync with skydrive.