this may not directly answer your question but may circumvent your problem if you don't already have push email set up.
You can set up a personal exchange account at mail2web.com. it will handle another email account for you and let you change the address that recipients see and reply to. that feature bumps you from a free account to a $2 a month account. you can then take advantage of push mail and even download a .cab file that will set it up for you. their are good new instructions at the mail2web site and they are very helpful if you call them. or you can read this thread:
http://ppcgeeks.com/updated-free-dir...2web+push.html
I hope this was helpful.