Finding Vehicle via Registration

[RedHotGT]

Not sure if this can be done...

BUT, can you find the registered owner of a vehicle via the registration details or the VIN/Engine number?

Reason I ask is, I'm interested in buying a car that I have previously owned, but I have no idea who owns the vehicle now...

I have all vin/engine details of the car... (old rego papers of mine)...
and I know what the numberplate was when I sold the car...

So - is there any way of finding the vehicle (of course in a legal way)...

Any ideas?
Cheers...