I have searched on the salix forum to see if there is a way to setup dropbox on salix, so far I haven't found anything regarding the way to setup dropbox, so here is a mini how-to, to get dropbox working on salix, xfce and lxde.
So what do you need to do? Well, it’s quite simple. 

  Download the daemon from 
http://www.getdropbox.com/download?plat=lnx.x86  ,  and extract it to your home directory. It will make a hidden folder called
 .dropbox-dist.  now open your terminal and copy and paste what is on the code line,  
 and that will help you setup your Dropbox account and provide a tray applet (works in xfce,lxde,kde and of course gnome, and it kindly tells you when it has synced your dropbox folder. That’s it!
have fun
Fitus