I just did this for my dad
I reinstalled all the software on the new machine (scratch built)then used the file and settings transfer wizard to complete the ordeal.
I have "upgraded" mine and other machines several times but this is the first time I've used the wizard. Let me tell you the time and energy saved using it was well worth the $10 I spent on a network crossover cable. I will always use the wizaed from now on. By the way it transfered about 4 gig worth of files and settings.
good luck to all