Interesting.
Servers, unlike workstations, are designed to run applications as services, i.e. in the background without the need to logon. Perhaps this is the case with the wireless. However, I must say due to the instability of wireless connections, I have never seen a sever connected to a network by means of a wireless connection to which I can compare. If that is why, and you can figure out what services are used, you might be able to experiment with Microsoft's tools, srvany and instsrv, for running an application as a service:
http://support.microsoft.com/kb/q137890/http://support.microsoft.com/default.aspx?scid=kb;en-us;Q152460http://www.tacktech.com/display.cfm?ttid=197This is a very common question, and unfortunately the answer is usually the same, the PC's NIC needs to support pre-logon wireless authentication, which is only available with software provided by a few vendors.