i love how people here are basically saying
use a mac and go through a convoluted process to get it to act like a pc
just buy a pc and use it, programs running natively rather than under emulation have less of a chance of screwing up, and run faster
besides, with windows 7 you can open a whole longint of tci/ip connections (that's 65535 simultaneous connections) you cannot do that with a mac
bottom line is...
if you are serious about business you buy a business machine