Ok,
Im doing some work for a primary school, they have a computer room with about 20 laptops.. all ibm thinkpads, they have never been able to get the wireless working on all the laptops, their named lenovo01 to 20 and iv noticed that lenovo01-08 cant connect.
so I checked the hardware, and it turns out that even though they all look the same, some are using slightly different wireless cards(inbuilt)(see first 2 pics) so im guessing thats the problem.. im pretty sure they are using wep encryption which i know is the weakest type.. they connect through a proxy which you can see in the last few pics.. server is windows server 2003.. iv taken a fair few screenshots to try and cover all bases.. but iv probably left out some important details.. so ask and il find out.. hope some1 can point me in the right direction.
Certificate issues... 
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