Auto Font Install program - Live

My company is a translation agency. Frequently we produce translations in foreign languages which require specific fonts. Presently I put these fonts either onto a CD, or I email them to the clients. A lot of our clients are not very computer literate, so I have to give them instructions on how to install the fonts. I would like to be able to send the fonts to clients with a small program which will automatically install the fonts on their computer. This would need to be something I could send either by email or on a CD or USB key, and preferrably it would need to work on PC and MAC, although PC only would be ok to start with. Is this possible? Can anyone help? Please provide proposals in clear english... I'm not a techhie - as the above may suggest! Many thanks Tom