How to get Dropbox to run outside of a roaming profile on Windows 7

1 - Create an appropriate directory on the C: drive to contain the Dropbox executable files:

md  "C:\Program Files (x86)\DropBox"

2 - Make a file junction to redirect the directory that Dropbox will create in your roaming profile, to the directory that you just created on the C: drive.:

C:\Users\Username\AppData\Roaming> mklink  /J  DropBox  "C:\Program Files (x86)\DropBox"

2 - Execute a silent install of the Dropbox installer and set the installation path to the above directory:

Dropbox X.X.X.exe   /S   /D=C:\Program Files (x86)\Dropbox

3 - Sign in to your Dropbox account and enjoy.