WEP Wireless in a Domain Environment

We are transitioning to a W2003 domain environment. Computers can connect to wireless AP when not members of domain. However, once they join the domain, no connection. They can't even get DHCP leases from the domain DHCP server. Our AP does not support any security beyond WEP. I've played around with wireless settings in the Group Policy as well as IAS but as yet, no success. I must be missing something very simple. Any suggestions?


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