Because you seem to have both the time and the inclination to keep reading this website, we feel we should reward your efforts by telling you how you can make your own RS-232 to RS-422 cable.
RS232-422 "Bastard" cable
|5||<=>||1, 3, 4, 6, 9, s||Ground|
On the 9-male connector, Ground pins 3 and 4 are most important.
The others (1, 6, 9, shield) are a good idea but not mandatory.
Some software may require that pins 1, 4, 6, and 8 be tied together on the RS232, 9-pin female connector.