i have brought a petrol pressure washer and could use some help on how to set it up ie i know northern tools do a lance but how big is it does it fit on to a wfp that i already have is the lance a tool in its self that has its own pole i also know that you need some sort of bin with hose atachtment on it is there any other stuff i need for that and with the patio cleaning what is it i need to do the job all i know is about the round thing that has the jets going round them what is this called and how much are they thanks for any help look forward to your replies marc