wpa not working with ndis?

Hey,

I have my laptop using ndis with a d-link dwl-g650+

i tested it using only nothing (means no wpa, no wep) - and this works  
without problems.

now, i configured wpa_supplicant to use wpa - so:

on my 1st box, wpa_supplicant crashes the systems
on my 2nd box, wpa does not do anything.

i start it using 'wpa_supplicant -indis0  -c/etc/wpa.conf -Bw

this works on my linux box without any problem.

my wpa.conf is as follows:

ctrl_interface=/var/run/wpa_supplicant
ap_scan=2
network={
    ssid="MyHome"
    scan_ssid=1
    psk="MyVeryVeryVerySecretPassphraseYouNeverGuess:-D"
    key_mgmt=WPA-PSK
    proto=WPA
    pairwise=TKIP
    group=TKIP

Thanks for any help.
Roger