At least, here's what worked for me.
First, go to the Dropbox web site. Download the package that says 'compile from source.' Once it is downloaded, use the archive manager to extract it to wherever you want it.
Next go to the terminal. Here's what I did (as root):
apt-get install libnautilus-extension-dev
apt-get install python-docutils
Once those packages are installed, make sure you are in the Dropbox folder that you extracted. Still in terminal:
Then you type the following to start Dropbox:
dropbox start -i
Works great. I still need to modify a file in Fluxbox to get it to run Dropbox automatically upon boot.