Does My 1996 VW jetta have a Crankshaft Position sensor???

[Jordan]

I have a 1996 Vw jetta its check light was on i took it to auto zone and they pulled the code and it said it was a Crankshaft Position sensor for for my make and model it said it was make with one but the computer said it needs a new one so is there one i cant find it or did some one switch the cars computer when a newer jettes? and if so how do i tell if some one has switched it? any help here would be grate
Oh if you need more info on the car to help me
e-mail me at [email protected] or im on aim
s/n jaybob1519 thanks