I think this is a simple question, but I don't understand the technology here... I have a Mac and this HP 8250 printer: http://www.shopping.hp.com/supmodel/product/Q3470A? The specs from the previous link show the wireless specs to be: Wireless capability: Optional, with HP bt450 Bluetooth Wireless Printer Adapter, HP bt300 Bluetooth Wireless Printer Adapter Can I buy this USB adapter and plug it in and print wirelessly with my Mac? http://www.amazon.com/IOGear-Blueto...9JIG/ref=sr_1_5?ie=UTF8&qid=1292976345&sr=8-5 Or do I need to go with something like this from HP (I cannot find the bt300 or bt450 available for under $150)? http://www.shopping.hp.com/product/printer/inkjet/wireless/4/accessories/Q6273A%231H9 Thanks for your help!!