There is also a way to do it if you can't find the ones you want in the Arial
Unicode font or if you want it to be in a font that matches the surrounding
text.
Word has an equation field that can be used to specify overstrike. You set
the characters to be overstruck as your circle and your letter -- you can use
a circle symbol or just the letter O, whatever you like. Chances are that
even with overstrike they'll not be lined up properly. At that point you
adjust the character spacing of the letter (usually need to raise it a bit)
so it fits within the circle. You might also need to enlarge the font size
on the circle so it's big enough.
Yep, that's a lot of work, but if you really need a letter in a circle it'll
work. If it's for a graphic, you could also just use the drawing tools and
put the circle behind the letter. An example of what the field would look
like:
{ eq \o (O, a) }. Insert the field code brackets using Ctrl+F9.
This is commonly done in Japanese, and they have a tool called "Enclose
Character" to do it more easily. It'll show up in Word if you enabled
Japanese as an editing language in the Office Language Settings tool.
(Start->Programs->Microsoft Office->Microsoft Office Tools->Microsoft Office
Language Settings)
