You could select the number then:
.. overtype it with the roman numeral equivalent; or
.. press Ctrl-F9 to embed it in a field, then type '=' before it and '\*
roman' or '\* roman \* upper' after it, so that you get something
like-
{=1909 \* roman} or {=1909 \* roman \* upper}
and press F9 to update the field.

Cheers

"brtilton" wrote in message
...
How do you change a random number in a document to appear as a roman
numeral?
I't not a list or page number, just a random number in a sentance.