How to replace head gasket on Vauxhall Astra 16i 8V l 94 Plate?

I think a step by step guide is beyond the scope of the faq farm. It's a reasonably straightforeward job but involves slacking and removing the cambelt from the cam sprocket.Then unbolt the head and lift off after coolant draining and removal of the inlet manifold and exhaust.Best to buy a haynes manual or borrow one from local library for a week.Geoff.