gary.
no probs mate.
all the best to you.

LT
i would sincerely suggest before spending any money at all you
try out a mac n run tests with music software and do the same with a powerfull i7 system.
for me i would have the latter. seriously mate i would talk to lots of people
with i7's before makeing a decision.
particularly watch carefully how quikly apps start up on an i7.
(assuming its configged properly.)
actually let me ask you a question.
in any song of yours whats the max no of traks you would have and max no
of synth and effects plug ins. ??
any real time synths that are heavy on resources ??
if not...here quad core amd 620 systems are 560 buks.
not an i7 in power, ..but might tide you over for a few years
till 8 and 16 cores get affordeable.

retired puter engr....powertracks on amd......NICE !
"what is the black art of audio engineering ?"
my silly songs...motagator.com/bmanning
see my tips in the tips section.