Bernd wrote: 
<snip>
when I just do this: 

"Simplest thing for your users with Win XP/Vista would be PEAP. Setup is the
same for wired and wireless. Connection/Properties/click on Authentication
tab/tick enable 802.1x box/select PEAP from the box/click on Properties
button/" and use MSCHAPv2 on configure button it does not work. 
So I tried to create a certificate and import it - still doesn't work -
think the cause is me and my missing experience with Radius. ;)

It sounds like we're in the same boat, but you're one step ahead of me.  I haven't been able to try the latest suggestions yet.  (Probably tomorrow).  I'm hoping to not have to deal with certificates unless it's completely automated for my users.  Most of them have little or no computer skills beyond basic usage.

-Doc