Exchange syncing from iPhone 2.0

For those having trouble getting their iPhone with 2.0 software to
sync with exchange, here is a tip. E-mail your companies self signed
security certificate to your iPhone. When you open the email, click
the attachment and install the certificate. Then go through the
exchange email account setup again and you should be good to go. Took
me forever to figure this out, and thought I might could save someone
else some time.