Look for the timing marks on the lower pulley, position it with the notches in the housing, take off No1 lead, take out plug 1, get a timing light & see if it lights up, If no Timing light, just use a long thin screwdriver or a torch to see when plug No1 is at T.D.C.
many techs advise changing w/pumps when doing cam belt changes , not always advised by the manufacturers but certain models are prone to w/pumps failing and as you are halfway into the job with the belts its a good precaution to change the pump at the same time.
Im assuming this is a zetec engine ? if my memory is correct you will also need a camshaft locking tool, also there is a tool(pin) to lock the crank in the correct position.