Windows 2003 IAS Problem

[Kururu]

Hi

I have a big trouble on the IAS with Windows 2003. Actually, I have
completed the IAS testing on MD5-Challenge authentication and working
perfectly.

When I change the authentication type to PEAP, I got below error message
from the IAS MMC.

A certificate could not be found that can be used with this Extensible
Authentication Protocol.

I have already build up the CA for the IAS, but I still got this error
message. Does anyone know how to configure IAS with PEAP
authentication??? Please help .....

Thanks x 10000

Kururu