http://superuser.com/questions/41992/how-to-configure-dropbox-as-a-service
Here is the procedure given on this link:
Since Dropbox will normally only work when a user is logged in, we will have to install and use it first via remote desktop, before it can be turned it into a Service.
- Remote desktop to your WHS as administrator
- Get DropBox from their website.
- Install and configure Dropbox as you like. e.g. I made a special share on my WHS named Dropbox before the installation and linked Dropbox to this share. Then exit dropbox from the system tray.
- Similar to Foldershare, you will need instsrv.exe and srvany.exe from the Windows Server 2003 Resource Kit Tools.
- Copy instsrv.exe to C:\Program Files\Dropbox
- Copy srvany.exe to C:\Program Files\Dropbox
- execute “C:\Program Files\Dropbox\instsrv.exe” Dropbox “C:\Program Files\Dropbox\srvany.exe”
- execute reg ADD HKLM\SYSTEM\CurrentControlSet\Services\Dropbox\Parameters /v Application /d “C:\Program Files\Dropbox\Dropbox.exe”
- execute reg ADD HKLM\SYSTEM\CurrentControlSet\Services\Dropbox\Parameters /v AppDirectory /d “C:\Program Files\Dropbox”
- Delete or move the shorcut to Dropbox away from the startfolder (Start -> All Programs -> Startup) on the startmenu.
- Move (cut/paste) ALL the files from C:\Documents and Settings\Administrator\Local Settings\DropBox to C:\Documents and Settings\Default User\Application Data\Dropbox
- execute net start Dropbox