I've dragged myself into this century and bought a refurb 15" powerbook which is as good as new. Just trying to connect to the internet but my very old Alcatel USB DSL modem (which I use on my 6 year old iMac) doesn't seem to have a place to connect to my lovely powerbook. So what do I need to replace this and apart from Airport Express what else do I need to enter wireless internet heaven. Cheers.