How change a fuel pump on a renault megane 02?

i have basically been quoted 350 to change a fuel pump,could i do it myself and how?

i live in darlington if anyone can help
How change a fuel pump on a renault megane 02?
The fuel pump is fitted in to the top of the fuel tank, if you lift up the rear seat base on the drivers side of the car you should find a round black access panel. Remove that panel and you can see the top of the pump, squeeze the coloured squares on the fuel pipes to release them, disconnect the electrical connector and then unscrew the large black plastic nut that holds the pump in to the tank. The nut will be tight and dealers use a special tool to release it, although it is possible to remove it by using a hammer and a screw driver and tapping it round. The biggest problem with this job is that some times when the nut is taken off it won't go back on due to the tank neck distorting, this usually results in replacing the fuel tank !