IAS with dynamic vlan assignement

Hi,

i m currently using IAS for authenticate user from my AD domain. I
wanted to add dynamic vlan assignement to my 3550 catalyst cisco switch
by adding some attribute in the IAS remote acces stategy.

so the port where the client station is connected get Up and the authent
ification is ok on client station but the Vlan i have specified in IAS
is not taken by the switch...

does anyone give me a sample of attribute to add to remote strategy ?

for now, strategy contain:

Tunnel-type VLAN
Tunnel-Medium-type 802
Tunnel-Assignement-ID VLANX (name of vlan no id)
Tunnel-pvt-group-id VLANX (same things)
Service-Type login
Vendor-specific shellriv-lvl=15

is this correct ?

the switch port:

switchport mode acces
dot1x port-control auto
dot1x reauthentication
spanning-tree portfast

is enough ?

i have some other configuration line like AAA or radius server... but i
dont think that it interested us in this case.

thanks for your answers and sorry for my bad english (i m french )