Question : Connect WM 6.1 (Samsung Omnia) WiFi to MS Domain using WPA2/AES/PEAP

Have a WM 6.1 smartphone with WiFi, corporate network (Cisco Aironet 1200) configured and functioning using WPA2/AES/PEAP.  When attempting to connect to this SSID and entering domain username and password, am unable to connect.  

Have already (on Vista machine on the network):
1) Exported (and successfully installed) the root authority cert for the domain
2) used certmgr to generate a new personal certificate for both EFS, Client Authentication and MS Trust List Signing, EFS, Secure Email, Client Authentication and successfully installed these on the smartphone.
3) Modified the HKLM/COM.EAP/Extension/25 key to include a new DWORD value of "ValidateServerCert' with a DWORD value of 0 (00000000) on the smartphone.

Still unable to connect.  Get the username and domain pop up, enter correct values, but unable to authenticate.

Answer : Connect WM 6.1 (Samsung Omnia) WiFi to MS Domain using WPA2/AES/PEAP

It turns out that the problem was that my wireless access point was litering by MAC address, so as soon as I added the MAC address of my Windows Mobile device, it connected.

I appreciate everyone's help in helping me narrow down what it wasn't, and so find what it was.