If you need symbols as alpha, beta, gama etc, use symbols feature:
From the upper toolbar pick: Insert - Symbol

If you are working with machine buttons etc, then you might want to use pictures and insert them into the text, since I am not sure whether Word contains buttons of that special machine.

http://www.mswordhelp.com/2010/05/wo...ound-my-image/

I hope it helps

If not, contact me via my website

Mike