I really like my wireless desktop but want to have access to either my self powered Toshiba HD or the Western Digital 500GB MyBook. I don't want to give up wireless printing but only have one USB port to work with. Can I use a powered USB hub to act as a port multiplier and access both my printer and HD? I read the Airport FAQ at Apple. It gives a green light for using a powered hub and several printers, but doesn't address HDDs. I know, they want to sell me Time Capsule. Thanks in advance.