How do I program my ignition key(97 Cobra)???

[T_Bone]

I just picked up a spare key for my car. How do I program it without paying the dealer $50?
I got a spare for my 96GT last year and the Ford mechanic was able to do it for free by inserting the original key and turning it on and off several times then inserting the new key.

I tried that, but it didn't work. Is the 96 different than 97? Maybe I did it wrong...
How do I do it? Thanks


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T-Bones 1997 Cobra#6342 born 6-11-97
Wht/blk, Pro 5.0,FRPP 4.10's, aluminum driveshaft, FRPP throttle body, C&L 80mm MAF, K&N, Steeda U/D pulleys, Steeda timing adjuster, Flowmasters, s/f connectors, FRPP pro springs, BBK caster/cambers.

My old 96GT