New keyless remote programming

I just picked up a keyless entry remote from ebay and I would like to know if anyone knows how to program it. The instructions for the 1999 maxima did not work. thanks:confused:

ID Code Entry Procedure

To enter the ID code, follow this procedure.

Entering "Setting mode":
(1) Close and lock all doors.

(2) Insert and remove the key from the ignition more than six times within 10 seconds. (The hazard warning lamp will then flash twice.) At this time, the original ID codes are eliminated.

ID code entry:
(3) Turn ignition key to "ACC" position.

(4) Push lock button on the new remote controller once (for example, if door is locked using the remote controller during this ID code entry enable state, a new ID code can be entered). At this time, the new ID code is entered. (The hazard warning lamp will then flash twice.)

Additional ID code entry
(5) If you need to activate additional remote controllers, unlock the driver's door, then lock again with door lock knob.

(6) Push lock button on the additional new remote controller once.

(7) This ID code entry enable state and setting mode remain until the driver's door is opened.