Sure. There are several options:
1) You should be able to access them as '"symbols" via the MText
Composer. You need to make sure you are still using the right font as
it lumps some typical ones in there I think.
2) alt-0### should work just fine (you need to use the number pad),
3) You can cut/paste from Word or something else that you can more
easily access the characters from (again make sure of the font as the
text style in AutoCAD you are pasting to, or change it afterwards.)
I found the instructions %%### for characters above 127. the number pad only
works properly for characters less than 128. The slow entry is not an issue
since I have to scale each one to a specific size and then convert it to a
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