802.1x and authenticating machine account

I have been using 802.1x with PEAP/Windows XP/AD for a while. We now have
some walkup stations in place that are giving me trouble. Since the
machine does not have cached credentials of the user logging in, it cannot
get past the login screen to start the EAP auth and activate the port on my
switch. I enabled the checkbox to use the machine credentials, so now I
see the request come in (host/machine.mydomain.corp.com). Is there a way I
can auth the machine? Could I do this via the users file? Maybe use the
realm file to modify the request to auth the machine against AD properly?

Mark Capelle
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