Stock Alarm Remote Calibration Options

[DVSBastard]

I own a 95 celica and I have been having a few problems with the stock alarm remotes for my baby.

I have 2 alarm remotes, however one has stopped working (that is it lights up when I press the button, but it does not trigger the alarm) and the other works, but thanks to old age it is extremely difficult to operate.

I recently went to my local Toyota dealer to get a replacement and they said it would cost me $125 for the remote and $65 for the calibration. Now as far as I know, calibrating the alarm requires removing the seat to get to the brain unit and hitting a reset switch.... if this is the case then I won't be paying $65 to do this as I can easily do this myself.

My questions are:
-Is calibrating the alarm really that straight forward? (is there any pics or documentation for this). If I buy the remote from toyota will I have any problems doing this?
-If I reset the alarm for my existing non working remote is there a possibility that the remote unit will begin working again (I guess this depends on what is wrong with it)?
-If I do reset the alarm for a new (or possibly the existing) remote will my existing flaky remote still work?
-It is my understanding that each remote has a different code so if I were to get a remote from another celica and reset the alarm I should be able to use that one with no problems. If this is the case, how many remotes can you have calibrated to the single alarm.

I would greatly appreciate any help regarding this situation.

Thanks in advance!