hi, i'm thinking about buying the time capsule hardware. however i have a few questions about it first. I want to connect it with a cable to my PC running XP sp2 to use as a back up hard drive as i can't do it wirelessly.and then put my internet modem in the WAN port and have my macbook wirelessly use it for internet and as a back up hard drive aswell. Is this possible? or can it only be done with Macs ?