vista and IE7 can't send mail in OWA 2003

in outlook web access 2003 can't send mail, and IE will crash when compose message
ref:
http://www.petri.co.il/removing_smime_control_in_owa_2003.htm
http://www.petri.co.il/ie7_crashes_when_posting_messages_in_owa_2003.htm

except install fix on exchange server.

but I'm not the server administrator, maybe wait for a year when many of mates use vista and IE7.