i use font xplorer lite (free) to view and install fonts. you could try using that. just put your fonts in a folder on your desktop where it's easy to find. open font xplorer and go to tools>install fonts. find the folder and voila. even if this doesn't help you install the fonts it's very handy for viewing them so you know beforehand what the font looks like.
http://www.moonsoftware.com/freeware.asp