I'm a little concerned as to what your d0 thru to d7 refers to... you say you have a 12F675, well that only has 6 I/O pins plus Vss and Vdd.

I don't have a circuit of a PICKit1, so I'm assuming your LED is on GP1... if it isn't, change the appropriate line in the code...

LED var GPIO.1 ' This is the pin the blinks a light.

...to reflect the line your LED is on.