Micra K11 no gears at all

Hi, I purchased my 2000 Micra K11 automatic, engine 998 s, 5dr few months ago. The car has 80k mile but was rinning great. It passed MOT in Feb 2013.
The problem is that I now have no gears and the car behaves as it was in N and is on hand break otherwise it just rolls down the street. Engine starts with no problems and when selector is moved to R, D or L you can hear engine RPM change. When I cycle back from D to P I can hear slight grinding noise as if something was not locking properly. When the car is in D (still no drive) and I press on the gas pedal the spedo is moving as if indicating that the car was driving. I changed transmission oil (3 L of Dex II) and still nothing. I performed the self diagnostic test to identify the fault and the first blink was the longest indicating that the vehicle speed sensor is short/disconnected. I checked connection of everything I could find on the gearbox and still not driving. I also read that the powder brushes may be the culprit but I could not locate them (they are not on the front of the gearbox next to the gearbox oil dipstick as it is shown in the Haynes K11 manual). I also tried to find the vehicle speed sensor on the internet but the only thing I found for K11 is the ABS speed sensor and vehicle speed sensor for vehicles made after 2001/2002.
I failed to mention that there is a hissing sound in the front of the vehicle in the gearbox dipstick. It sounds like air escaping form a compressor but i could not find where it was.
I seriously need some help since I can't even drive to the garage. Anything is appreaciated.
Thanks,
 
the cvt type changed in 2000 charlie, the later ones have a conventional torque converter (and hence no carbon brushes) are the driveshafts ok ?
 
thanks frank, I thought of that but could not imagine this could be the problem. i will go underneath the car in a day or two and update the situation.
 
Hi,
Here is some update on the situation.
Since I had some issues on verifying if the drive shafts were faulty I called up few garages in York, UK. The most common diagnosis was "the gearbox is shut", followed by "there is a leak from the engine into the gearbox", then "the torque converter is the problem". I must say that few of the garages were auto transmission specialists. The last I called was Paul Garland garage and the guy immediately said that the drive shafts are the problem (just like many of you suggested). The car is at the garage now and the mechanic said that after they lifted it they saw the drive shafts pop out of the transmission. He also said that they looked newer and asked if they were replaced or reconditioned. I recently bought the car so I don’t know. He said he need to investigate why they came out (are they too short or too long or what). Can anyone suggest a reason why they came out?
It would be greatly appreciated.
 
I wouldn't go 2 transmission place they il charge u for 100 pieces ud never need jack car put axle stands in put in gear let clutch out and listen below 2hear were the noise is
 
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