0)disconnect battery and drain coolant.
1)take off the drive belts
2)remove water pump and crankshaft pulleys
3)remove timing cover, and belt be carfull to not move either the crankshaft or timing pulleys or you will mess up your timing.
4)remove water inlet pipe and gasket from the water pump.
5)remove mounting bolts and use a soft face hammer if the pump doesn't go quietly.
0)clean bolts and bolt holes to get rid of the gunk
1)remove all traces of old gasket material from the sealing surfaces.
2)MAKE SURE THAT YOUR NEW PUMP LOOKS LIKE YOU OLD ONE.
3)apply a thin film of silicone sealant to the new gaset and install it on the water pump.
4)carfully mate the pump to the engine block, and install the mounting bolts to 14-19ftlbs.
5)reinstall all parts removed to gain access to pump and use a new gasket on the inlet pipe, and fill up your coolant system.
Alt. Method- if you don't want to mess with your timing get a licensed profesional to install it for you.