I have Longhorn beta 3 running as a Xen guest however I can't get it to connect to the network. I set the IP and gateway for the network connection but it still says "limited connectivity" and I can't ping the gateway.Does anybody have an idea how to fix this?

Are you trying to connect to a wirless network or via a cable? cheers, Nilanka

It's a virtual NIC and it shows up as a regular LAN connection, it keeps saying it has limited connectivity though. I can't get DHCP or static IPs to route anywhere.

Configure XEN to allow your VM's to connect to the outside world. If you can't ping your gateway it's probably that your virtual network is configured as internal only. I can tell you how it's done in Virtual Server but that won't do you any good I'm sure that you can enable DHCP on your XEN-server too, so your VM's get their addresses automatically.This guide should get you started: http://www.howtoforge.com/perfect_xen_setup_debian_ubuntu