We're working on a brand new Dropbox Wiki with better features and ease of access! Find out more.
From Dropbox Wiki
LEASE NOTE: I CANNOT ACCEPT LIABILITY FOR LOSS OF DATA OR DAMAGE CAUSED BY TRYING ANY OF THESE METHODS, DO SO AT YOUR OWN RISK!. YOU HAVE BEEN WARNED!.
Do this on all PC's you want to share your system directories with and they will then sync between them.
This method will work for Windows Vista/7
Navigate via Windows Explorer to your user account, i.e. C:\USERS\<myaccount>
Then just select the folders you wish to be synced via Dropbox, for example you can sync the following. Contacts, Desktop, Downloads, Favorites, Links, My Music, My Pictures, My Videos, Saved Games & Searches, choose the directores and right click, choose Move. Now goto your Dropbox folder and create a new directory such as "System Directories" and now paste the folders into here.
Generally best to have your Dropbox folder stored at C:\USERS\<myaccount>\Dropbox or somewhere other than the directories listed above, do not attempt to move a folder that contains your Dropbox folder into Dropbox!.
The following method will work on Windows Vista/7 and should work on Windows XP although not tested.
This method will redirect your Desktop folder to be inside the Dropbox folder. Just create a "Desktop" folder within your Dropbox and change the registry to point towards that.
1. Create a "Desktop" folder within your Dropbox.
2. Open the Registry editor. Click on the Start button and type in "Regedit.exe".
3.Browse to the location: HKCU > Software > Microsoft > Windows > CurrentVersion > Explorer > User Shell Folders.
4. Select DESKTOP from the window pane on the right and insert the location of the new Desktop folder inside Dropbox (ie. D:\Dropbox\Desktop). Close the registry editor and log off.
5. Repeat on your other computers.
You can also change settings in here so your Favorites, Documents, Downloads, etc are synced to the Dropbox folder.
WARNING!!! DO NOT STORE THE DROPBOX FOLDER IN ANY OF THE SYSTEM FOLDERS THAT YOU MODIFY TO BE SYNCED BY DROPBOX, WHETHER IT'S THE "DESKTOP" OR "MY DOCUMENTS" ETC.
WARNING!!! ONLY THOSE COMPETENT IN EDITING THE SYSTEM REGISTRY SHOULD ATTEMPT THIS, MESSING AROUND WITH THE REGISTRY CAN CAUSE MAJOR PROBLEMS, FOR WHICH I CANNOT BE HELD ACCOUNTABLE, TRY THIS AT YOUR OWN RISK!.
A shortcut to the dropbox on your desktop however will be ok, just do not have the location set as on your desktop or any other folder you modify via the registry.
Once you are happy that your changed directories are working as planned, you can export the registry branch and maybe store this in the route of your Dropbox folder so to mod another computer you just import those settings.