Gusto,
I keep my Toolbar files (RUI) in my dropbox and open them from there, then all my computers stay synced. Caveat is if you leave an open copy of Rhino running on one machine and open another on a different machine it will create conflicted copies of the toolbars, I just delete the conflicted copies, but sometimes I lose changes this way and have to make them again. Similar to the problem of having multiple instances running and making changes to toolbars in one instance but closing it before closing all the other instances.
You can also put your template files in dropbox and set Rhino to look there for them.