wpa2 with certificate (xp)

hi,

i want to connect to a wlan (wpa2).
we use a certificate for the autentication.
if i store the certifiacte in "current user/own certifiacte" everithing
works fine.
now, a other user is logged on, he has no certificate. so he can't connect
to the wlan.
i tried to import the certificate in "locale computer/own certificate" but
it doesen't work.
any idea who i can import the certifiate for all users???

greets,
tobi