Instructions provided describe how to prevent numbered streets from being standardized using the ordinal number. For example:
The street name '7 St' is standardized to '7th St' by default.
Instructions provided describe how to maintain '7 st' as it is.
Rebuild the geocoding index using the Rebuild Geocoding Index tool in ArcToolbox > Geocoding Tools (9.0, 9.1) or rebuild the address locator using the Rebuild Address Locator tool in ArcToolbox > Geocoding Tools (9.2) after making these changes if an address locator already exists.