whoa whoa wait a minute...
if you know what fonts they were, you can download them from the internet to this folder:
'name of drive'\Windows\Fonts
the Fonts folder has has an icon that looks like a folder with an 'A' on the bottom right of the icon.
Go into the Windows\Fonts directory, right click a blank area and choose "Install New Font". This opens an archaic looking dialogue that lets you browse to a directory to install fonts from. Choose shadow copied directory and then "Select All" and "Install". Then holding down the "y" key to say "Yes" to the zillion "Do you want to replace x font?" popups. There is no "Replace All" option.