Set certain folders as Dropbox or SkyDrive folders

Is there a file hostibg service with their own desktop application which, instead of merely having a single active syncing folder, will allow you to set folders across your system to be synced?


I ask as I have a few folders on my system which I want copied over to skydrive but I want to keep their current location so do not want to just move everything over to the automatically created SkyDrive/Dropbox folder, I want all of these folders in their respective locations. I update these folders often which i why I want a cloud storage of them.