Just upgraded to 12.04 from 11.10 and am working through updating/replacing Gnome-shell extensions. One particularly useful extension was: Gnome-shell extended places, which included shortcuts to Filezilla FTP sites, but also Virtualbox machines. Is it possible to install this in gnome-shell 3.4?
If I remember right there are at least two extensions for places.
I dont know if this extension will fullfill your needs but I quickly found this extension
and there was another similar extension more (i didnt found it in my quick serch)