Need someone to change my HardDrive

Hi,
I've got a 2008 Mac Book and i would like to change my 250Go HDD to a 500 or 750Go one without losing any datum and I would like to keep everything as it is (my itunes library, my photo albums...)

If someone can do so please contact me : lucas.oppenheim@hec.edu

Good reward if you manage to do so !