@ is one of a series of "find operators" that serve a special purpose in find. To get such a character to be treated as just that character, enclose it in quots. Since @ is in the middle of the text, I'd use:
To find all records where that field contains the at symbol.
Thanks for the input. I have solved the problem. I was not clear on the * Find Operator. FM describes this operator as "Zero or more characters". I could not understand this description since Zero or more would return everything.
Anyways, it appears that the "*" operator does work for what I am trying to do. That is find all records with ANY characters in that field.