~~Only For Windows~~
--If using a Software other than Microsoft Word
then as said before
Start->Programs->Accessories->System Tools->Charecter Map
Simply choose the charecters you want to put and Cut/Copy/Paste(ccp) them
--If using Microsoft Word
in MSWord goto
Insert->Symbol
here you can choose the font you want, for eg.
use Times New Roman (etc) for Infinite, and some similar
use Symbol to put Alpha, Beta and such others