Right Click Windows 7

Tight Clickin in Windows 7

I found that you need to press Shift and right click on the folder or the file to get an extra menu. Not sure about Firefox, but worth trying that.

http://www.winhelponline.com/blog/hidden-right-click-context-menu-options-windows-7/

Heres a registry hack, download these files, If these files are .reg files then just double click on the files and they should add themselves to the registry.
http://www.howtogeek.com/howto/windows-vista/add-copy-to-move-to-on-windows-vista-right-click-menu/

Hope that helps
Lyn