Mazda3, 2008 remote

I'm a nubie...just purchase a 2008 mazda 3 but only got 1 set of keys and remote...Thinking of buying a used remote (ebay) and reprogram it....too expensive at the dealer, so I will browse the forum for help, I'm getting the key at an Ace hardware store for $75 cheaper than the dealer.... thanks all
 
what did you find out about programming the remote and key?

From a different place on this forum:

This was deleted, so I'm re-posting it:

Step 1: Open driver side door and leave open.

Step 2: Lock and Unlock the drivers door using the power door lock switch on the door

Step 3: Insert key into the ignition.

Step 4: Turn Key to ON position and return to Lock (off) position. Do this 3 times within 10 seconds. LEAVE key in the ignition in Lock (off) position.

Step 5: Close and open the drivers door 3 times. Leave door open after this step

Step 6: ECU should respond by locking and unlocking the doors once.

Step 7: Press any button on remote #1 twice. ECU responds by locking and unlocking the car doors.

Step 8: Additional remotes, repeat Step 7 for up to 3 remotes total.

Step 9: Remove the key from the ignition and the ECU will respond a final time with a series (about 4) of door locks and unlocks. You're done!

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and for the key:

Items needed:
1. 2 pre-programmed transponder keys.
2. 1 new transponder key

The timing is critical to this procedure, please read through the entire procedure before attempting.
Procedure:
1. Insert one of the pre-programmed transponder keys and turn the ignition to "on", leave on for at least one second (I wait until the red key symbol in the instrument cluster extiinguishes), remove the key from the ignition.
2. Within 5 seconds insert the second pre-programmed key and urn the ignition to "on" for at least one second but no more than 5 seconds (use the key symbol for this as well) then remove the second key.
3. within 10 seconds insert the new key in the ignition and turn the ignition to "on", if you are successful the red key symbol will illuminate then extinguish after about a second.

...this is also from another page on this forum.

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Please report back with your results.
 
For the key programming are two programmed keys required? I'm down to only one set on my 2007 Mazda 3 Hatchback 2.3. If two programmed keys are required then does this have to be done at the dealer or can locksmith do it?

I did pick up a "new" remote on e-Bay so I'll give that programming sequence a try.
 

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