if your head gasket has gone the cylinder head will need to be skimmed,because its made of aluminium and warps when the gasket goes,not a job you can do,unless you own an engineering company,the norm cost of this is £100.00.if you take the block off send it to be skimmed,then its just a case of getting new gasket,and fitting it ,hope this helps ,but you will need a torgue wrench to tighten the head bolts to the required tension,(cheaper to put into garage)
mm, May 2011