First, make sure that the small o is correctly typed as an upper case O.
Do not put the program number within the parenthesis. The file name should be within parenthesis.
If the file is called O00009.nc, your machine should see it. (Also working from memory here as I quit using floppies a long time ago.)
But the file can have any (8 CHARACTER) name, with an .nc extension, so long as the first line is a % sign and the next line has the program number in proper format:
%
O00009 (TEST)
First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)