If you are that fearful or bias against owning Wintel, why not consider purchasing a copy of Microsoft Virtual PC for the Mac? You'll spend hundreds less and you can keep your Mac as your primary machine.
You'll be able to run Windows XP and bridge or NAT the connection over your Macintosh' network connection?
Seems silly to purchase a whole new PC just to play Poker.
Get Virtual PC for the Mac:
http://www.microsoft.com/mac/product...?pid=virtualpc