Radius Server at W2k8 for AlliedTelesis switches

[Salivan]

I would like use W2k8 as Radius Server for login authentication for AlliedTelesis switches (x900-12XT/S).

I configured one switch as client:

!
...
!
ssh server allow-users ra*
!
...
!
radius-server host 10.20.4.50 key makaron
aaa group server radius GRUPCIA
server 10.20.4.50
!
aaa authentication login default local group GRUPCIA
!

and second switch as server:

!
...
!
crypto pki trustpoint local
!
crypto pki enroll local
radius-server local
server enable
nas 10.20.4.50 key makaron
nas 10.20.4.70 key makaron
group login1
attribute Cisco-AVPair shellriv-lvl=1
attribute Service-Type Login-User
group login15
attribute Service-Type Administrative-User
user rajacek password ramkmk group login15
user rakamil password raokok group login15
user ramotyl password rartrt group login1
!

It works. Now I would like move Radius server from x900 to W2k8.

I don't know how I should configured W2k8. I try use the same setting like for CISCO devices, but it does not work:
filedb.experts-exchange.com/incoming/2008/12_w51/87700/TA0001-Windows-2008-RADIUS-for-C.pdf

How should I configure W2k8???