problems with connectivity

sooo… I just got my new Asus 1000hd netbook, and I'm trying to connect it to the wireless network in my apartment- unsuccesfully. Allow me to elaborate: The network is broadcast from a mac airport router. There are currently 2 other macs (roomates), my my thinkpad (xp), and two xbox 360's connecting the network just fine. I'm postingt this from my lenovo, as it happens. I seem to be actually connected to the network with the asus, as I am sending and receiving packets. The signal strength is good. I cant get an ip address, though. IP and subnet mask come up as 0.0.0.0 in cmd. When I try ipconfig/release and ipconfig/renew I get the following messages: ipconfig/release: No operation can be performed on Locan Area Connection while it's media is disconnected. IP Address for adapter WIreless Network Connection has already been released/ ipconfig/renew: No operation …(same as above). An error occerred whlre renewing interface Wireless Network Connection: unable to contact your DHCP server, Request has timed out. I'm not exactly sure how to approach this. any ideas?

If the network has encryption enabled requiring a passphrase to connect, the most common cause of your problem is that the passphrase has been typed in wrong.