Sorta, hard to answer as you listed no model.
CHAIN
Yes not cambelt chain driven
No the camshafts are chain driven.
Rubber tothed cambelt
sorry you cant realign cambelt,as the v6 engine is chain driven.
if you have a zetec engine its a cambelt and if its a duratec engine it chain driven with auxillary driven by a separate belt
Never its chain driven.
according to all the lit it doesnt have one its chain driven
That engine does not have a timing belt, it is chain driven and should last the lifetime of the vehicle.
Cambelt.
I believe that the 1.2 Corsa engine swapped to a chain driven cam with the move to the 'latest shape' cars - usually Y registration and onwards. A 2000 Corsa is the previous model and will, I reckon, have the belt driven cam. So, it's 4year/40,000 mile belt changes under vauxhall's latest recommendations.
cambelt