How about you can't upgrade the cpu it's soldered to the motherboard. You can't change the main board because the system including the case because it's designed around the mainboard and the devices like the hard drive and DVD drives. In the end you'd be better off buying a new rig.
The intel version of the dv7 motherboard is the same shape and everything as my AMD dv7 motherboard.
im going to be buying the intel motherboard (comes with Nvidia GeForce 9600m GT w/ 512MB Display Memory) , intel core 2 duo, thermal paste, dv7 intel heatsink
and then ill just combine all that with what i already have and it should be good