This is going to sound like a really silly problem but for the life of me I cannot work out what is going on. I am trying to connect my MBP to a work windows network, it is a WPA encrypted network running via DHCP. there are no Access control lists blocking my machine but I cannot get the network to assign me an ip address. I can connect to the network but cannot do anything without an ip. The weird thing is if I boot up Parralels and run Xp on my machine as a virtual machine XP gets assigned an ip address and I can get on the net etc, that is how I am typing this message in fact. I am running 10.5.4 Also, a colleague has a Macbook running 10.5.2 and that connects no problem. I have checked all the settings on my machine and this macbook are the same. My firewall is not the issue. So I know I have the correct password and can connect but for some reason I cannot get an ip address. I have dhcp enabled on the MBP for this connection. I have tried creating clean accounts and seeing if the issue is to do with my user setup and that does not make a difference. Help! I dont want to have to use my lovely Mac with Parrallels forever at work just to send email and check the web. Any ideas?