Porting Code

There is a project Open GPS Tracker that uses an AVRASM2 format. How would I go about porting this from the avr's assembly format to arduino.

Is it as simple as following the code converting the pins from e.g. PB0 in avr to pin 8 of arduino.

Then rewriting the loops and functions or is there an easier way.

Sorry if the question has been answered, when I search "port code" it didnt provide relavent results

Thanks Jeff

Can't think of any easy way of translating asm to C, sorry - it's all legwork.

LOL naturally I would pick my first project to be a pain. O well thanks for the help